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.
The hallmarks of cults is: separation from friends or family, a person or ruling body that delivers the one and true version, punishment for rule breaking, and a difficulty separating. Also, it almost always devolves into sex slavery and/or arranged unions.
Those things give you control of course, but they are the basic guidelines of cult like behaviour.
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.