I think that the best you can do is to completely ignore the event. Whatever you do, don't attract any more media attention to him by 'protesting' or holding a sign or shooting the bird. He, like most politicians, thrives on attention. Negative attention beats no attention to his type of creature.
------------------
"I don't believe in individualism, Peter. I don't believe that any one man is any one thing which everybody else can't be. I believe that we are all equal and interchangeable."--Ellsworth Toohey