I'm very confused by your argument here. Did Palin herself hold up the monkey? You say "People who support you think it is ok and even 'cool' to bring things like that to a rally." Looks to me like an attempt to compare these actions to Palin and give the impression that Palin is a racist and would condone the actions of this one person.
So let's compare apples to apples and compare Palin's supporters to Obama's supporters. You say that Obama doesn't promote vicious personal attacks but his supporters (as well as many of you here) have had a hayday with the vicious personal attacks of Palin and McCain. To use your own words, People who support Obama think it is ok and even 'cool' to attack McCain and Palin. THEY have called out his age and anything else that could be mocked, attacked and made into a cartoon.
So if Palin is a reflection of her supporters then isn't Obama a reflection of his supporters as well?