There have been threats of violence and extremely troubling rhetoric coming out of some of these rallies, but no violence. And I think what myself and other Obama supporters object to, or at least lay at the feet of the McCain campaign, is all of these insinuations from Palin that he "pals around with terrorists," he's not pro-America, he has "associations" that need to be looked at, he's not "one of us," etc. Then McCain comes along and says "No, no, you need not be afraid of or scared of Obama, you just have to disagree with his policies." The MILF lathers them up and then Grandpa comes along and hoses them down. He wants the benefit of these kinds of character attacks while seemingly distancing himself from them.
So, as for my official position on the ugly rhetoric coming from McCain supporters caught on tape, ultimately people are responsible for the views that they hold, but where are they getting this stuff from? The robocalls, the leaflets, the chain emails, etc. And that IS the responsibility of the McCain campaign. This looks like the work of some meth-addled street thug. Obama is not lathering up his supporters in a similar fashion.