Is it time to start calling out bad cyclists?

really? yes there's always someone trying to cross. indicate, make your aural warning of choice if you feel the need, bell or voice, wait until there's a gap (there will be a gap, you just have to wait) or more often than not, some of those people walking will see you and wait for you. not so problematic really.

It can be very problematic. I love stopping, giving way to and interacting with peds and motorists- my way blurring the us and them line. However on a bike I don't have brake lights and if I'm looking to turn off a quick moving major road and you as a ped choose not to look I'm putting myself at high risk of being hit from behind by inattentive drivers following also looking to turn but are not expecting me to stop half way into the turn.

Turning off London Bridge into Tooley Street is a killer for this: folk stepping out on red daily.