1948 United Nations treaty
The Genocide Convention (formally Convention on the Prevention and Punishment of the Crime of Genocide) is a treaty of the international human rights law on genocide created on 9 December 1948 by United Nations. This is to prevent all form of genocide and its incitation and to show how the actors of those must be punished.
This Convention protects all ethnic groups and races of any kind of religions.
Now actor of genocide written in this convention will be judged by the International Criminal Court but there are some countries which do not ratify this Convention and international law on Internationl Criminal Court.