Is it time to start calling out bad cyclists?

Well, the other day a girl was about to try to go down a gap of less than a foot between pavement and bus. I said, "That's a really bad idea," and when I had her attention continued, "people get crushed doing that." She stopped but at the next light, now with less than two feet she muttered, "eh" and went down the gap. sigh

Ultimately, you've done your end of the bargain. How would anyone feel seeing someone riding in ignorance and eventually get crushed in front of your very eyes? If they throw it back...meh, you tried.