I think what is worrying is that the terror attacks by Hamas have created tensions all over Europe.
Jewish people are under threat and don't feel safe in the streets; and Muslims just wanting to go about their daily lives are intimidated by extremists - like Robinson. And Muslim extremists of course will use this opportunity to threaten jihad. The right-wing racists will be in full throttle as will the militant Islamists.
It's a bit of a tinderbox and I suspect that the police in various European nations are worried about civil 'war' breaking out on the streets and have visions of overturned, burnt-out vehicles, barricade in various areas, looting, and the usual violence perpetrated mostly by young men. Images we've all seen from time to time in the media.
I'd imagine that all the police forces are all trying to do what they believe will potentially avoid this kind of mayhem.
Our own police force has long insisted, after the cuts in their numbers, that they don't have the manpower to deal with serious disturbances (like this, I presume they meant).
It's easy to criticise them, but what would you have them do? Because they are in a no-win situation. If they go in heavy-handed and start arresting those pro-Palestinian marchers who are clearly out to cause mayhem - many of those who are not will get caught up in the ensuing fights with the police by the militants; officers will be attacked and injured, and like a cancer, it will spread to other cities in the UK.
I don't think the vile chants are being "tolerated" or "accepted". I'm sure the force are combing the photo's looking for those they can arrest - singly - some of whom will already "be known to the police".
Robinson was arrested because he breached the order to keep away from that march against anti-Semitism. The organisers were not fooled by his 'plan' to let British Jews know they "were not alone". They've seen the insignia that some of his followers sport, and heard the cries of "Sig Heil", and they know that football hooligans have a penchant for joining in, and that some are fuelled by alcohol.
If the police had not banned him - what then? There would have been a backlash from the organisers and the marchers.
The police are in a no-win situation. They are going to be damned whatever they do.
But before criticising them, I think people should just try to use their imagination and understand that they are, above all, attempting to keep the peace. They are not the military, they are not an army - and they can't act like one. They have riot shields and batons... imagine them wading into a - on the face of it - peaceful march to grab hold of individual marchers, and the scuffles that would potentially turn into fights, with them and with others joining in. And then, like wildfire, the media having this on their front pages - it would spread throughout the nation.
I say all this, and yet I am very critical of the police and quite cynical about the way they sometimes behave and perform. But, we do have to be realistic. That attack by Hamas has lit a torch - and we have to be careful to contain the potential danger that presents.