Hundreds Arrested at London Protest

The Metropolitan Police stated that the individuals were detained for showing support for a proscribed organization, which was designated as a terrorist group by the UK government last July.

The ban is currently being challenged in the High Court, with organizers claiming the police action was premature and heavy-handed.

Protesters had gathered to oppose the criminalization of the group's direct-action tactics against defense companies.

The scale of the arrests marks one of the largest police operations at a London protest in recent years.