I read somewhere that the US is directly and indirectly responsible for the deaths of more than 100 million people since after WW2. The US completely failed to be a leader country for the World. Now it's even at the brink of a civil war at home. Resolve first your own problems at home instead of trying to tell other nations what to do... And I won't defend the bad things happened in China and Russia in the past, but the issue is about now and the future.
USA had racial segregation even into the 1960ies. It proves that it's a racist country, b/c even after the end of slavery, for more than 100 years, black people were treated just as 2nd class citizens, even by federal and state laws... Similar with native Americans, the First Nation.