What an idiot.
Most black people in the U.S. are just fine. The problem is the underclass of all races, but in which blacks are overrepresented. But that is beyond Neil Young's powers of analysis.
FWIW, Canada's black population is about three percent. They are outnumbered by South Asians and Chinese. The big ethnic issue has to do with native peoples. The situations are not comparable.
And if he thinks England is fine with regard to race and multiculturalism, he's been brain dead for at least 20 years. Which is probably the case.
And most of those came voluntarily from the Caribbean in the last 50 years.