It would be a VERY bad thing if anybody were to physically harm Sarah Palin. Or her family.
I seriously doubt America would get upset if there was a close encounter against Obama or his family, but Sarah Palin?
A whole heck of a lot of America will come to the Palins defense than Obamas.
I don't think any one of us would like the response to an attempt on Obama's life. Widespread gun confiscation would be a certainty, and the First and Second Amendments would simply no longer exist. I want Obama to be healthy, happy, out of office, and living out his Earthly days in a Federal prison.