Extra police were sent to Brixton last night as a crowd of about 150 people celebrated Baroness Thatcher's death late into the evening.
Scotland Yard said the group caused "low level" disorder and threw a small number of objects at officers, but there were no arrests and no serious injuries.
This amateur footage was uploaded to YouTube.
The Ritzy Cinema said it had nothing to do with masked people who climbed the front of the building and changed the film listings tiles to read "Margaret Thatchers dead. Equality is the key".
The group dispersed at about 1.45am, police said.
More top news
A team of prosecutors investigating the downing of a Malaysian airliner over eastern Ukraine in 2014 is due to release new findings today.
Juan Pujol Garcia had to go to extreme lengths of deception in order to convince his wife to stay living London.
Heavy rain will move into Northern Scotland today, and the winds will become strong here through the afternoon.