No nation is perfect. You can go into every nation's history and find tragedies.
It's not a question of perfect, Ren, but if you want I'll make note of your lame attempts at diversion.
War crimes are not "tragedies", they are war crimes. You can't go into very many countries' histories, none that I can think of, and find such an enduring legacy of pillaging and war crimes.
And again, this all has been done under partial cover. This has all been done with a big happy face - "Oh look at us, we're here to help the oppressed".
These atrocities have been hidden from the world and from US citizens. You should be hopping mad that these crimes have been carried out in your name. That you are not doesn't really come as any big shock.