Just tell your friend he's an idiot in an intelligent way. Actually put it right under the pic on facebook.
Let him know that most people on welfare are not black.
Let him know that even if EVERY black person was on welfare it would still only be 11% of the population.
Let him know that most people on welfare don't even vote.

Let him know its spelled "Air Jordans".
Let him know that half the country voted democrat, and that even if every black person on welfare voted, it'd hardly make a dent in the election numbers.