There are many genocides in history that the U.S has not recognized or actually had a hand in. The U.S. was involved in horrific things in Nicaragua and Honduras - that should have gotten people in Prison at the very least. But if you look at what Turkey did and history should record it as a genocide, but also what Zionists did to Palestinians in the 19o0's - 1960's needs to be noted as well. What Europeans did to Africa. What Japan did in China. There are so many and in each case the guilty country refuses to admit their responsibility.