Is it time to start calling out bad cyclists?

To the guy trying to race me on Brockley Rise at 8:10 this morning, please don't play around on busy London roads like that. Swerving to block other cyclists, intentionally forcing them into traffic and aggressively chasing while shouting "Gonna stop you gonna stop you" is pretty poor behaviour. It's not a race.

Chant the same as he comes alongside then stick a bike pump into his spokes. I'm sure he'll see the funny side.