I like the "Prats on bikes" idea - it's the behaviour that is the problem not the person and they are being prats if they jump lights, ride on pavements, squeeze up the inside of buses, etc whether they are a hoody or a roadie.
Gambatte, OT, you have reminded me of my earliest cycling crash when I had a paper round many many many years ago. Descending a hill at speed with a sharp right hand bend at the bottom and going over the bonnet of an approaching car.
I was uninjured but it resulted in the newsagent having to get insurance for his paper boys and girls - which he had never bothered with before.