Back to the point of the thread.

Police ignore protest ban around parliment.

Other police do nothing.

BBC NEWS | Magazine | How can police protest at Parliament?

The police claim it is down to the Home Office to intepret if this is a crime, the Home Office insists it is the police.

Where were the police saying the Home Office must decide if Milan Rai or Maya Evans were 'protesting'?

Oh thats right, cause they can use their discretionary powers when it suits them. Screw the public and our rights, but when they want to protest and are refused permission, they just do it anyway.

Who is to arrest them after all?

Of course come monday, they will be back on duty waiting to arrest you, and me and anyone else that dares to protest about stuff that is important to them.