Is it time to start calling out bad cyclists?

Mine was more like:

PoPo: Are you a courier?
Me: No?
PoPo: Oh, I just saw you had a pouch on your belt.
Me: Wouldn't be able to deliver much with this would I?
PoPo: Suppose not.
PoPos Horse: Ooo.. is that sugar in your ear? Let me try and get my tongue in it to find out... Nom nom nom...

My only RLJ discussion with an overseer:

PoPo: Do you know what a red light means?
Me: Yes.
PoPo: Do you think it's safe to cycle through a pedestrian crossing while they are crossing.
Me: Not particularly, but they had a red light and I went as soon as my light changed to green. They shouldn't be crossing the road when their light is on red should they?
PoPo: No, they shouldn't, but it's very busy and they are trying to get to work.
Me: So am I, but I don't cross junctions on a red light to get there quicker. I've learnt my lesson, I'm sorry for your trouble.
PoPo: Don't let me catch you going through a red light again.
Me: You haven't, but I'll bear that in mind. Thank you officer.