Oh yeah I forgot about the indians...
But they get casinos, tax-free lives, and cheap booze, so we've made amends with them.
No one has a responsibility to protect. If that was the case, why, as has been pointed out, is the US the primary force in any and all police action? Because the rest of the UN knows the US will do it. But really, why the fuck should anyone give a shit about the rest of the UN? For all the crap we've been spouting about how morally corrupt the US is, the rest of the UN has done some pretty seriously fucked up shit throughout history. Let's overlook Germany, Italy, Japan and Russia for now, since everyone knows how fucked up they were. The French, British, Spanish and Portugese were four of the biggest douchebag countries in the history of the world. They're responsible for more crimes against humanity than almost any other nation. Oh sure, to be fair they had different governments in those days, but they wouldn't even be on a world map if not for their crimes. 95% of Americans (North and South) probably wouldn't even know those countries existed if not for their atrocities. Without Spanish and Portugese systematic genocide, there would be no Brazil, Colombia, Argentina, Chile, or Mexico. There would be no Hong Kong, opium trade, or modern India without British asshats.
Korea shouldn't even be on the world map at all, period. That area should have been a Chinese, Japanese or Russian expansion centuries ago when the Silla, Paekche and Koguryo nations were invaded (gotta give the Koreans some respect for fending off four major world powers all these centuries). That's not anti-Korean sentiment -- I love Korean girls -- but a simple fact of world history; North and South Korea should not even exist, they're products of the War. The US was at fault for the Korean War 100% all because they didn't want Russia or China to have any reign over Eurasia's dingle. Let them continue their in-fighting, it's in their blood and part of their national heritage.
The US is not the UN, nor is Britain the UN, nor is Russian the UN, nor is China the UN, nor is France the UN, etc., etc. The governments of the nations of the world wrote up a bunch of various pacts and treaties so their leaders could pretend they were making nice and would play fair. The UN is a load of crap. Even the League of Nations was a load of crap. Many of the various pacts and treaties and laws and rules set forth by either of those major global unions have been violated by the same nations that signed them. The UN is nothing more than a gentleman's club. No member nation of the UN or League of Nations ever cared about human rights or world peace; the UN and LoN were strictly alliances built up around peace treaties. It's easier to keep an eye on your enemies if you live with them.
It's not a lack of morals in the world populace or a lack of love or respect for other people; it's just the natural order. Why give a shit about people in other countries that we will likely never meet or see who are killing each other when people have been killing each other by the thousands for millenia upon millenia? It's a fact of human nature. It's the history of our world. Let the rest of the world deal with their own problems, each nation is responsible for itself.
And all those little kids starving or getting shot up in Africa? Blame their parents for fucking like rabbits and just making more kids to starve or get shot or sold as slaves or whatever. The world sucks; it's not the US's problem or Japan's problem or China's problem or Britain's problem or Russia's problem or Germany's problem or France's problem or Canada's problem (bet you were wondering if I'd ever bring up Canada). If you want to prevent kids from starving to death in Africa, sterilize African males. Why don't the major governments care about Africa? Because neither Russia, China, nor Iran give a rat's ass about anything south of Egypt. Except for a few diamonds, there's nothing there for them. And as long as Russia doesn't care about Africa, the US won't care about Africa. If you want to make a change in Africa and get the US government's attention, convince Putin to invade Africa.
(For the record, I think a lot of males need to be sterilized or girls need to be, whatever the word is. Evn China's one-child policy wasn't that effective. Breeding is encouraged only because it is required to support the previous generation. If you want people to pay for you when you get older, have two kids. If they want people to pay for them when they get older, they need to have two kids each as well. No nation can support that, so every major nation's populace needs to be sterilized and brought back down to manageable levels. If you can't sterilize a population, let it kill itself instead.)