There's been a slew of groups started and subsequently removed from FB in the past week after someone on A&S pointed out this one.
The "There's a perfectly good path..." group isn't going to get removed, because the group itself isn't dedicated toward violence; just a misguided opinion that cyclists don't belong on the roadway.

Search on FB and report all the other groups like "I want to run over cyclists with my car" (recently removed), "Run the cyclists off the road" (recently removed), "I'm gonna run a cyclist over one of these mornings" (still there; report it), "I will go slightly out of my way to run over that crunchy-looking cyclist" (still there; report it), and there are more.

If you'd like to cut and paste a response for the FB admins, I use the following:

"Advocating violence towards cyclists is not the position Facebook should be promoting. By allowing this group to remain active and make a direct call for violence toward cyclists, it is admitting that Facebook, its staff and its affiliates believe this is acceptable behaviour. It is no different than a cyclist creating a group titled 'I throw bricks off freeway overpasses', and advocating assault against motorists."