Sadly, such things do happen in other countries. Some more, some less. Some a LOT more than in the US. Do folks in the US hear about them? Mostly, no -- US media is extraordinarily poor at covering "foreign" news. Do folks in the countries in which the things happen hear about them? Depends on the country. UK, Australia, most western European -- yes, they do, and the outrage can if anything be more vocal. Southeast Asia? Middle East (except Israel), Russia? most of Africa? Uh... no.
Do folks in countries than the US hear about that sort of thing from the US? Very commonly, they do; US bashing is a very popular pastime in quite a few places -- and, to a certain extent the US brings it on itself, with an attitude that the US is better than anywhere else.
On the other hand, making race a factor in anything that happens is quite prevalent in the US, and encouraged by certain factions within US society. Black on white or vice versa race has not been as much of a problem in most European countries -- for good historical reasons -- until recently, but that seems to be changing (and there have been some rather ugly incidents both recently and historically regarding such minorities as Jews and Gypsies...).