Soldato
The thing is it doesn't have to lead to violence on their part. They could simply not turn up. The only reason they do it is to be confrontational. If one group are being violent just leave the police to deal with it.
So let them march and spread their hateful offensive message? Taking into account they often do this in areas that the people they are aiming their hateful rhetoric at live. Anti facists certainly used to turn up try and stop them doing exactly that. The fact the far right are marching there in the first place is confrontational. They don't march through Hampstead or Chelsea do they.
The far-right are barely registering on the richtascale right now and any marches or events are barely reaching triple digits and attended by the sad and lame.
A couple of years back I was tasked with reviewing the CPS cases involving arrests of far right protesters at a few events and had to advise discontinuece as it was obvious from CCTV that the far right had complied by the rules of peaceful protest and the initial consultation with police for pre-event planning. Antifa showed up and with zero provocation attacked the right with bricks, poles and broken bottles causing GBH injuries. My honest held belief is somebody would have been killed if it wasn't for 10-15 polish ultras fighting off dozens of Antifa who then ran away.
If Antifa hadn't have turned up then it would have been an embarrassing non-event like what was seen by Britain First rally's.
Why did the police/security services recently say that the extreme right wing are second only to extremist Islamists in the threat to the public? Again I'm not defending violence. Anyone that instigates violence should be identified and arrested.