LONDON  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 the group’s ban on July 5 under the Terrorism Act, more than 200 people across the UK have been arrested for displaying slogans such as "I Oppose Genocide. I