In 18 years of officiating football, I've only gotten on a few photographers/videographers. I did have one a couple of years ago that would not listen at all and would step a yard on the field to get the shot. After warning him several times, I had to tell the site manager that he had to leave the field or forfeit the game. He almost got taken out a couple of times.
I enjoy having a good time on the sidelines (I was a Linejudge for 13 years) with the coaching staff and other people. The worst incident I ever had was a Catholic priest who was the principal of the school. I had to eject him and the cops had to escort him off the field when he refused to leave. From then on, he had to sit in the press box or not be in the stadium at all. That was the league's doing.