Amnesty International UK has urged the Metropolitan Police against mass arresting peaceful demonstrators expressing support for the recently banned group, Palestine Action, ahead of a major protest planned in London on Saturday. The protest organized by the activist group, Defend Our Juries, is expected to draw hundreds.

Since Palestine Action was proscribed last month there have been more than 200 arrests for peacefully showing support for the group

The U.K. government has proscribed the network as a terrorist group, a decision fiercely contested by the group itself.