I'm sorry FC, but you have to admit that it is not a clever thing to do. I know it doesn't condone someone smacking him in the face, but hey ho, it happened, and I know that a lot of people in the same position would do the same. If I went to Fratton Park in a Saints shirt, and threw a flare/smoke bomb, I would expect to have the living cr@p kicked out of me, and I could have no complaints.
But luckily, I'd never do that...