US is the worst in human rights abuses not only in US only, but around the world by killing tens of millions by wars and bombings over decades. As for US itself, it was founded on stolen land by killing off tens of millions of native population , it used blacks as slaves and didn't treat them as humans, racial segregation had been practiced in centuries and the remnants are still clearly felt in today US, they put innocent Japanese immigrants into concentration camps and confiscated all their properties, the list goes on for ever..
if it is not for Uncle Sam you would be licking the boots of Japanese troops