http://news.yahoo.com/s/ap/20070126/...in_tone_income
According to the researcher, this appears only a US problem! The report goes on to say on average blacks earn 10-15% less than whites. What I could not infer is whether blacks are either underpaid or earning commensurately as per their jobs. Or whether whites are either overpaid or earning commensurately as per their jobs!
if indeed blacks are underpaid then we have a discriminatory problem but if they are paid accordingly then

. On the other hand, if whites are paid accordingly, then

but if overpaid then more BMW can be bought and driven.