Extinction Rebellion protesters face prosecution for gluing themselves to the windows of a hotel.

"Aggravated trespass" is a name invented by the UK government when it decided to repress nonviolent protest more strongly. When you see that term, think "repression".

A crowd of supporting protesters could have prevented the thugs from hiding the glued protesters from the public. There was no need for that, except as a way to make the protest less effective — evidently to serve the planet roasters meeting in the hotel.