Get involve ??

I believe that the United States should get involve in countries that are starting to have a genocide problem. The people who are being killed, etc have no one to defend them, so the US should help people in need. This is a horible act of human nature i don't understand how a person would want to get rid of a group of people either racial or by religion. Genocide is a horable act it should never be commited again in history, if it does a power, stronger, and well conncted country should come to the rescue !