Yes actually I would.
First of all, George Bush and Saddam Hussein are similar only by the facts that they are/were both men who were once heads of state of their countries.
Secondly, if, for some reason, Saddam had come to the US and appeared on a stage with our president and a US journalist threw rotten eggs at him (the rough equivalent of shoes in an Arab nation), he too would have been arrested and prosecuted. Hopefully he would have received a similar punishment.
Question him harshly, address him rudely, or march outside of the White House carrying insulting banners - all fine.
Physically accosting a head of state invited to our country by our government - not fine.