You know, he's right. Take a look at any new commercial set in an office - the manager is now *usually* black, and the employees are a glorious rainbow coalition. This may more accurately reflect reality (well, except for the black boss part), but it is jarring to people who have seen thousands of comemrcials where everyone is white and hubby comes home to a piping hot meal with the whole family.
Next time you see a commercial aimed at kids (for example, McDonalds or Burger King) look around. These days there's ALWAYS a disabled kid having a great time. That's just fiction and it reads phony as hell.
Everyone knows crippled kids are miserable outcasts.
Eg. 1 - Doofus dad saved by McDs, bonus points for dad being a wealthy black guy.
Eg 2 - Wake me when the affirmative action starts