Is it time to start calling out bad cyclists?

Has anyone else noticed the amount of people that veer off the road when going through a junction. For example, crossroads with a yellow box, sitting waiting at lights, when the lights go green, you should go straight ahead. But no, an alarming amount of people set off then veer to the left, even going out of the box then back in again before exiting the junction. Is this the magnetic kerb effect do you think?

And another thing that irks me, the bit in Camberwell at the bottom of Denmark Hill. It's a no right turn to get onto Coldharbour Lane if you're heading South through Camberwell, you should use the one way system that goes around by the back of Morrissons. Some wankers think it's ok to just pull up at the lights opposite the Nandos, at the end of the one way system because they can't be arsed to go around. Then they proceed to carry out the above shit junction move or just get in the way.
Re the veering - yes I have, especially Boris Bikers.

I agree with you about that Denmark Hill/Coldharbour Lane junction but after living there on and off for 15 years I've become used to the anything goes attitude as evidenced by peds, drivers and cyclists alike.