This was a Critical Mass event, which is why the bicyclists are taking up all of the street as a way to reclaim the streets and protest the lack of safety for riders under usual conditions. It’s not legal, but protests are never useful if they’re fully legal now, are they.
ITV: a driver just hitting the gas pedal when confused
I’m referring to people in the thread acting like eveyone knows what a critical mass event is or that people should always be expected to know that a mass number of cyclists taking over the road is to promote better infrastructure. They are baffled that anyone would be confused.