So what do the police do if they suspect someone is about to lock themselves to fencing / run on the road etc?
I'd also add, there are people who would literally kill the main people involved in all this. Thst isn't the case for the leader of Republic I am certain of that, but the police cannot fk about. It was probably the most high profile event in the world this week, was front page news globally and the idea the police will sit back and watch is naive in the extreme.
Lots of people did peacefully protest, and good for them. That some were arrested suggests perhaps that they had other ambitions?