I didn't see the clip on the news, but that group looked suspiciously like the Wednesday Wheelers, the group from CRW that I ride with. I saw more than one CRW jersey there... however, the leaders have been very aggressive at yelling at riders who don't get in a single file line when someone yells car back. I have been known to use my school teacher voice in these cases.
Sigh, I recognized some of those places on the rural roads.
I have conquered the suburban traffic, but riding in Boston or Cambridge still scares the crap out of me. Generally, I have not had any issues. I obey the law, though. When DH and DS started riding in 1999, they had tons of stuff thrown at them, bottles, soda, oranges. They got called "fags" while sitting on a bench, drinking a gatorade once, right around here, as they were wearing lycra. That has not happened in a very long time. Yes, always guys in trucks doing the throwing.