Being hit by a fast ridden push bike can do a person serious damage.
I once witnessed a woman hit by a cyclist on Station road/Bridge road near the school. He hit her full tilt and she was taken to hospital, broken arm split head and unconscious. It is not to be laughed at.
and I have seen cyclists ignoring pedestrian crossings. I saw one guy who fell (was pushed?) off his bike whilst weaving through people on a pelicon crossing, who jumped up and demanded to know why the had got in his way.
I gave my particulars to the police who attended and some time later his solicitor had the cheek to write to me asking if I'd make a statement to the effect that she was partly to blame by moving in front of him as he tried to pass her, completely ignoring the fact that she (and the cyclist) was on the pavement. And of course there was no insurance for her to claim off, as there should be!
The problem is that some cyclist ruin it for others (as in all things) because they think the rules of the road only apply to everyone else and not them.