Rioter pushing against police shields is knocked to the ground

Britain braces for night of 100 far-right demos: Riot vans line streets, parents are told to watch their children and PM warns thugs 'will face full force of the law' - as cops reveal they are probing terror case

Moment Plymouth rioter pushing against police shields is knocked to the ground by fed-up officers attempting to quell to violence. The man, dressed in a pink t-shirt, is seen falling to the floor, as others gasp in...