If a group has negative stereotypes then any behavior to the contrary is considered an exception to the rule. I like the way he put it regarding groups vs individuals.
This isn't anything new. It's how black people in America have been treated for hundreds of years. Use one thing to demonize all of us, but if one person does good, it's about that one person only even though they might still downplay and/or dismiss the positive thing the black person did.