There's nothing contrary to British tradition in wandering around London demanding political changes. Futile protests make people feel they've done something, then they can go home after a fun day out and get back to supporting the system by working for a living.

The trouble comes when people take notice of these protesters instead of ignoring them, or worse still hold counter-marches so that everybody can have a punch-up with the police (though I suppose that is also in line with British traditions).

Unfortunately, it is inevitable that this will provoke a counter-demo by those who also want the UK to be polarised into "True Brits" and "Immigrant Muslims".