That video is very crude propaganda and it does not deserve much time deconstructing it, but here are a couple of points.
Combining a fictionalise (and romanticised) account of something (Bridge on the River Kwai) with real life film is dishonest.
I don't know what all the processions had in common, but I am guessing it was celebrating some kind of festival (anyone read the banners). The equivalent would be showing the Whit Walks in several areas and saying just because it is a group of religious people gathered together, that it is sinister.
The elderly couple interviewed, if their attackers are muslim (and that was only implied) why have the police not set up CCTV, why if they have been attacked many times, are the police not protecting them?
Of course there are fanatical muslims in this country but there is no evidence that they haver any support let alone any evidence that they have the support of ALL muslims as this videos suggests. The vast majority just want to live here peacefully.
Probably the only thing I found disturbing was that the cameraman was urged to stop filming, and the policewoman told him to stop filming a public event. If they did not want to be filmed, they should not have had their procession in public.