while a cream pie may be comical--oh, look, he got a pie in the face!!--or even just an egg thrown at ones back, it is assault.
if you resort to violence in protest, then you have crossed the line from protestor to attacker. while Mr Prescott's reaction to the attack was regrettable, it was a natural response.
it seems to me that Mr Evans was not expecting to get a direct physical response to his attack. to me, this shows a definite lack of intelligence or foresight. it also seems to show that the protests
organisers weren't very careful about choosing the people they
recruited to protest.(that is if Evans was part of an organised protest)
earnest protest and peaceful civil disobedience are both
good tools when your purpose is to outline and try to change the faults you perceive in the world you live in. violence is not a good
means to an end.
When one tugs at a single thing in nature, he finds it attached to the rest of the world. -John Muir