The video shows how riders on the February ride were ordered through red lights by the police, despite it inconveniencing pedestrians who had right of way. Later on the police van was blocked by some bollards and petulantly sounded its twos-n-blues much to the amusement of the riders.
A policeman at the beginning of the ride let slip that he was concerned about CM causing mayhem to motorists, thus revealing his true agenda. Also mentioned was that CM sound systems are not allowed in the London SOCPA zone but, of course, this does not seem to apply to motorists.