In case you’re still lost as to what the heck is going on, a Scientology Run is when people film themselves charging into a Church of Scientology building to see how far they can get before being caught and booted out. It’s a notoriously secretive religion, so it turns the whole place into an action-movie set piece where the protagonist is trying to infiltrate a compound while fending off its legion of foot soldiers, clad in terrifying white button-ups with black vests.
Yeah there are probably dozens of definitions of cult with tonnes of overlap but without complete agreement. Just a notable example is there are some cults which pop up wherein they don’t necessarily have a ruling body since it’s basically a cavalcade of idiots feeding into each other.