Why so much fuss, so much work? Put surveillance cameras everywhere, film it, identify every single one of them, put charges on them and most importantly, cancel any state support or benefits they get plus make their schools annul the current year so they have to repeat. Those hooligans will try to double down but if the authorities stand their ground on it and hit them where it hurts most, those demonstrations will whittle down to the hardcore members in no time and those are very few. There is plenty of space in prisons for them.
Extinction Rebellion have dismissed Scotland Yard‘s claim that the force would not allow large-scale London protests planned for October.