Is it time to start calling out bad cyclists?

First time I've ever felt compelled to call someone out today. A guy on a flat barred single speed/fixed jumped every light along Camberwell Road and then up through Oval and Kennington Road, always doing that pointless waiting in the middle of the junction as traffic goes by in the wrong direction. Not exactly new behaviour, but definitely riding like an absolute cunny and putting himself in harms way whenever he could.

I think though the fact he had a toddler straddling his top tube the whole time he was doing this was what left me absolutely fucking fuming.

there was a guy last night - all the way from st johns st right the way along upper street who was riding like a total fucking idiot - weaving all over the place caring neither for people nor red lights just going as fast as he could regardless - he had a childs seat on the back of his bike.

thankfully the seat was empty, but i couldn't help wondering if he still rides like a twat if he has his kid on the back.