Today I rode in midtown Manhattan during rush hour in early evening (already dark). During the about half-hour ride, I encountered at least 5 salmon riders riding wrong way. I nearly hit two of them: the first one just suddenly appeared in front of me from nowhere (I think he just made a turn but my view was blocked by trucks), and he did not have any light, so I did not see him until he's just a few feet from me. The second one made a large circle left turn and got on our way--his wrong way--and again, there were trucks that blocks view so he was another surprise.
These guys are gambling with their lives, but they also endanger other people's lives.