Organizers say 1 million people took to the streets in London for an anti-Brexit demonstration on Saturday. The "Put it to the People" march, which demanded that Parliament grant a second EU withdrawal referendum, is considered one of the biggest protests in British history, despite Prime Minister Theresa May saying earlier this week that she believed the British people did not support a new referendum. The march took place just days after the EU agreed to an extension of Article 50, which will now trigger the U.K.'s exodus from the EU on April 12 — with or without a deal. May, who has so far been unable to secure a withdrawal agreement, has faced renewed calls for her resignation.

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