Exercising rights = agitation?

"According to Jules, after he attempted to take his first shot, he was "quickly and aggressively stopped by one of their adult officers asking me who I worked for". He refused to provide his personal details – and from there on, events moved swiftly downhill. In the clip, a male officer with an outwardly poor grasp of the law can be clearly heard.

"The entire gamut of inconsistent excuses are given for why Jules cannot take photos, ranging from the "fact” that it is illegal to photograph children without parental permission, through to breach of copyright and anti-social behaviour. When all that failed to move the young snapper, the police officer informed him that he was an "agitator" and a "threat under the terrorism act" for photographing a police officer – before removing his camera and frogmarching him away from witnesses and – Jules claimed - pushing him down some stairs.

http://www.theregister.co.uk/2010/06/29/police_photo_bother_romford/