There's a Coastside Mountain Bikers Strava & Facebook group for people around HMB/Pacifica. The founder of the Facebook version decided to make it open, so a bunch of hikers & dog walkers joined it for some reason. When one of my buddies posted a GoPro vid of him hauling ass down the local (very intermediate) trail, the founder deleted it because he said "it makes bikers look bad" and suggested that he should post videos like another guy in it (who's a crap rider but GoPros everything including himself riding his Bronson on flat paved trails). Fucking Bay Area...