Sounds more like he's saying that blacks diminish the role models that exemplify that success, not that they're lazy.
Of course, the last civil rights demonstration I went to (The Million, plus or minus nine hundred fifty thousand, More March), most of the speakers were arguing that "success" should be redefined for the black community anyway...and that education opportunities for whites and blacks should be separate but inequal (apparently math changes depending on skin color, I don't know), so maybe they're right to idolize gangsta rappers rather than CEO's...
Or maybe Martin Luther King Jr. is rolling over in his grave, watching these yahoos deconstruct his entire movement.