She was protesting about the physical and sexual abuse of children by the church. The criticism helped to continue the protection of pedophiles, which continued for decades and still happens.
Joe Pesci (a study in short man syndrome) said on TV he wanted to slap her for ripping up a photo and the audience applauded him for it.
They have some powers, they got upset at Facebook and decided to flex a bit by sending one of the boys around, to invite one of his mates for a chat.
https://www.theguardian.com/technology/2018/nov/24/mps-seize-cache-facebook-internal-papers
The person sent was the serjeant at arms. They carry a sword. Doubt they took it out but they also carry one of the House of Commons maces, which is gold covered and jewel encrusted, about 1.5m (4.9ft) long and weighs roughly 10kg (22 lbs).
Imagine some large, pissed off looking dude, dressed like he’s from the year 1415, kicking your hotel door in because you didn’t RSPV properly. Then being told hand over documents or we may stick you in jail (and you know the pretended it would be the Tower of London).
The 1,000 yard stare he must get when asked if he enjoyed London and how lovely that history must be.