What do you think of Wayne Brady's joke about Trig Palin?

Roasts are funny when the people at the roast are being made fun of not when, innocent people become punchlines. Wayne Brady is Hilarious, but I lost a lot of respect for his insensitive comments. At least he apologized. He knew it was wrong other wise he would not have offered as much.

Why is this ok with ANYONE?? Mean is not funny.