Answer:
Genocides
Step-by-step explanation:
The genocides we know are the Nazi Holocaust, Rwanda, and Armenians. The genocide creates a condition to remove ethnic groups from society as they are named as unwanted populations.
As a superpower nation, the U.S. government should take the matter of genocides seriously. They can raise the issue in the UN to fight against injustice. The U.S. can also send troops and volunteers to safe people for the sake of humanity.