Did "Family Guy" go too far?

link in title.

I'm a little confused about why America keeps listening to what Sarah Palin has to say, but I found this tidbit interesting. Apparently the popular cartoon show "Family Guy" featured a character with down syndrome in their latest episode. Palin found it especially offensive, as it was an obvious dig towards herself and her family when the character proclaimed that her mother was the "former governor of Alaska."

At first, I saw why Palin would find this offensive. Mental and physical disabilities are extremely touchy. However, after watching the clip of the show and the AP video, I'm starting feel like Palin is overreacting. She isn't the only one to be made fun of by the often borderline-inappropriate show. And the "joke" was literally two seconds of the entire show. I didn't find it particularly funny or necessary, but I also don't think Palin should really be focusing her attention on fighting this. Is she just looking for things to criticize these days? What do you think? (p.s. it makes a lot more sense if you watch the short video in the link)