Killing members of this group

Convention on the Prevention and Punishment of Crime
The Convention was adopted to prevent actions similar to the Holocaust committed by the Third Reich during World War II. The first edition of the Convention also included politically motivated killings, but the USSR and a number of other countries refused to consider actions directed against groups identified by political or social grounds as genocide. As a result of a political and diplomatic compromise, these criteria were eliminated.


The subjective side of genocide
The subjective side of genocide includes guilt in the form of intent (intention) "to destroy, in whole or in part, ... the group as such." That is, if the subject of the crime was aware of and wanted certain consequences as a result of his actions. Neither in the definition of Raphael Lemkin, nor in the UN resolution of December 11, 1946, there was no category of intention.
The subject of genocide
According to Article IV of the Genocide Convention, the subject of this crime is "persons who commit genocide or any of the other acts listed in article III, ... regardless of whether they are constitutionally responsible rulers, officials or private persons". That is, the subjects of the crime of genocide are individuals.
With regard to State responsibility, according to article IX, "Disputes between the Contracting Parties concerning the interpretation, application or implementation of this Convention, including those relating to the responsibility of a State for committing genocide or one of the others listed in article III, must be submitted to the International Court of Justice at the request of any of the parties to the dispute." Thus, the issue of State responsibility for the commission of genocide is decided by the International Court of Justice.
The most well-known facts of the genocide in the XX century are (chronologically)

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  Extermination and deportation of Armenians in the Ottoman Empire in 1895-1923 (see: Armenian Genocide).
  
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  Extermination by Nazi Germany during World War II of Jews (see: Holocaust), Gypsies (see: Genocide of Gypsies) and Slavs (see Soviet prisoners of war during the Great Patriotic War).
  
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  Extermination of Serbs during the Second World War by the pro-fascist Croatian regime of Pavelic (see: Ustashi).
  
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  The extermination of up to three million Cambodians by the Pol Pot and Ieng Sari regime in Cambodia in 1975-1979 (it is often called genocide, although the nationality of the victims was not decisive, if we do not talk about individual national minorities). See: Khmer Rouge.
  
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  The extermination by Iraqi forces of the Kurdish population of northern Iraq — in particular, during Operation Anfal 1987-1989.
  
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  The 1994 Genocide in Rwanda was a massacre in Rwanda, as a result of which representatives of the Hutu tribe exterminated 800 thousand members of the Tutsi tribe.
  
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  Srebrenica Massacre (1995) — the massacre of Bosnian Muslims by Bosnian Serbs.
  

And today, when more than sixty years have passed since that terrible tragedy of the XX century, people still should not forget about it, it is necessary to remember it, read, think about it and understand that even if not now, even after many years, but it can happen again, because the world still continues to happen acts of genocide against peoples and the longer it goes on, the more the chances increase that the situation may repeat itself, as with the Holocaust, meaning that any genocide can acquire a similar scale.
The genocide of Jews during the Second World War is not just an event in Jewish history that was so terrible, but it is also a universal tragedy. Every person, no matter what nationality he is, what religion he professes, what ideological views he adheres to, etc. – should know that since the 30s of the XX century and for more than ten years, the extermination of an entire nation has been taking place, and what is the most terrible thing: the rest of the world has allowed it.
Despite the fact that racism and nationalism can be considered the primary source of the genocide, later it began to manifest itself against the background of an official political idea. The term "genocide" upsets the political balance. The state is a criminal in the case of genocide, and states need to somehow coexist with each other, not by will.
In addition, genocide is a unique crime of its kind, which does not in any way prevent other states from agreeing with the ruling regime that commits it, thereby politics becomes at odds with ethics. In accordance with Article IV of the Convention, responsibility for genocide is borne by all those involved in it, regardless of status and position.
In any culture there is a division based on national, ethnic, religious and racial principles, and recently such a division has been taking place based on political views. And the appearance of genocide is most likely if society is divided into two "subcommunities" that have distinctive features, that is, when there is such a fact as bipolarity. The prerequisites for genocide may arise as a result of the disintegration of society on a political basis, political restrictions occur.
As for the reaction of society to the problem of genocide, one thing is clear here that society is in the dark. Because of the moral values that public opinion has always supported, people insist that criminals be punished. But, nevertheless, opinions can be manipulated if you present your point of view correctly. Society is able to see the grief and suffering of victims and the excuses of criminals. The mass media influence the perception of the problem of genocide, for the reason that they have control over society.
They can either keep silent about the incident, or give it unprecedented significance. Consequently, the perception of the problem of genocide is controlled, for example, if events go against politics, then you can withhold information, not disclose it, and if the information helps to bring the criminal to clean water, then lay them out completely. The genocide is imbued with a feeling of hatred of one people for another. But, they always try to disguise this phenomenon as much as possible. Humanity itself is to blame for the fact that society can now divide within its own species. In nature, only man is capable of killing his own kind.
Of course, genocide can be avoided, but it will be possible to do this only when states begin to recognize the fact that morality is above politics and realize how serious and illegal their actions are. Humanity has entered the third millennium, and some of the lessons of history, unfortunately, have not been learned by us.
Genocide is one of the most common international crimes and can manifest itself both in peacetime and during conflicts. There are many cases of genocide in the history of mankind, starting from ancient times and up to the present day. This is especially true for wars of extermination and devastating invasions, campaigns of conquerors, internal ethnic and religious clashes, for the formation of colonial empires of European powers.
The Political Instability Task Force estimates that 43 genocides were committed between 1956 and 2016, resulting in the deaths of about 50 million people. According to the estimates of the UN Refugee Agency, up to 50 million people became displaced before 2008.
Some more examples of genocide in the XX century:

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  Extermination of the Herero and Nama tribes in 1904-1907.
  
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  Extermination and deportation of Christians in the Ottoman Empire in 1915-1923 (see: Armenian Genocide; Pontic Greek Genocide; Assyrian Genocide).
  
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  Extermination of Serbs during the Second World War by the pro-fascist Croatian regime of Pavelic (Genocide of Serbs (1941-1945)
  
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  Repression along "national lines" in the USSR (1937-1938). A series of mass repressive campaigns conducted by the NKVD during the Great Terror of 1937-1938 and directed mainly against persons of nationalities foreign to the USSR (Poles, Germans, Latvians, Greeks and others). Some researchers consider it as acts of genocide.
  
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  Deportations of peoples to the USSR. Koreans, Germans, Finns-Ingermanlanders, Karachays, Kalmyks, Chechens, Ingush, Balkars, Crimean Tatars and Meskhetian Turks were subjected to total deportation by the Stalinist regime to the regions of the Urals, Siberia and Central Asia. In addition, other peoples were subjected to significant deportations (Deportation of Poles, Kumyks, etc.). The deportations were recognized by the Supreme Soviet of the RSFSR as an act of genocide — see the preamble and Article 2 of the RSFSR Law No. 1107-1 of April 26, 1991 "On the rehabilitation of repressed peoples").
  
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  In August 1960, the International Commission of Jurists stated in its report that "acts of genocide were committed in Tibet in an attempt to destroy the Tibetans as a religious group."
  
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  The extermination of up to three million Cambodians by the Pol Pot and Ieng Sari regime in Cambodia in 1975-1979 (it is often called genocide, although the nationality of the victims was not decisive, if we do not talk about individual national minorities). See: Khmer Rouge, Killing Fields.
  
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  The extermination by Iraqi forces of the Kurdish population of northern Iraq — in particular, during Operation Anfal 1987-1989.
  
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  The 1994 genocide in Rwanda was a massacre in Rwanda, as a result of which the Hutu tribe exterminated 800 thousand Tutsi people.
  
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  Srebrenica Massacre (1995) — the massacre of Bosnian Muslims by Bosnian Serbs. Also during the Bosnian war of 1992-1995 there were ethnic cleansing among the civilian population.