At the beginning of the evening large crowds gathered in Parliament Square, facing off against police. (Photo by Daniel Bateman/VICE News)
Officials on megaphones announced repeatedly that face masks must be removed when demanded by a police officer. A statement issued in advance of the demonstration highlighted the UK law that gives officers the power to ask members of the public to remove facial coverings "where police anticipate there may be criminal offences."Video: Sports car knocks over & injuries protester on — Phil Caller (@Phil_Caller)November 6, 2015
A number of the crowd arrived in costume, including a man dressed as Jesus. (Photo by Daniel Bateman/VICE News)
Most protesters carried signs, often posing in front of police for "selfies" or photographs. (Photo by Daniel Bateman/VICE News)
Flares, fireworks, and smoke bombs were used during the demonstration. Here, a man lights a flare in Parliament Square. (Photo by Daniel Bateman/VICE News)
As police dispersed larger crowds, a small group of protesters set fire to a police car in Queen Anne's Gate and smashed the windows. (Photo by Daniel Bateman/VICE News)
Later into the night, protesters moved toward Buckingham Palace, facing a line of police on the mall. (Photo by Daniel Bateman/VICE News)
A policeman carries an Anonymous mask after protesters are forced to remove face coverings. (Photo by Daniel Bateman/VICE News)
A protester is placed in handcuffs in Trafalgar Square. (Photo by Daniel Bateman/VICE News)
A man lies on the ground in handcuffs as police arrest him in Trafalgar Square. (Photo by Daniel Bateman/VICE News)