I haven't travelled the world so I can't be the judge of the statement, "America is the least racist country in the world."
You have to make that statement based on the actual realities of our country...not what goes on in others. I'm 67 and an American citizen born to Chinese immigrants. So I grew up when segregation...overt and legal racism, existed.
My Dad told me stories about his service in the US Air Force during WWII, how he was assigned to an all-Chinese squad, and how even though he fought and risked his life for America, his squads were treated differently than the all-whites. There were places we couldn't go or enter, even in Los Angeles and SoCal, and there were places where we couldn't buy a house... but more so in other parts of the US. But he said that I should do my best, learn English, get good grades and go to college and get along with everybody. This country offers better opportunities, and so it's better than China, where people are poor and communism is starting to spread, wiping everybody out.
Even after passage of the Civil Rights Act and the Voting Rights Act, I was reminded occasionally that I'm not equal, I'm different from white Americans. Growing up, I was often told to go back where I came from, most often by whites...
so MACS and Gene may right, but the statement acknowledges that racism still does exist in America...and it feels and looks different depending upon your race. Denying that it is a problem enables it to continue. Telling people to move to another country if they don't like it here is disrespectfully racist, especially to a minority member who was born an American citizen and loves his home country just as much as most Americans who have no plans to move. Why not work harder to make racism even lesser than it is, because isn't that our goal: true equality?