LONDON — A member of Britain’s Parliament was shot and stabbed to death Thursday in an attack that stunned the nation and brought to an immediate halt the country's European Union referendum campaign just a week before the vote.
Police did not provide a motive for the killing. But British media organizations including the Guardian and Sky News quoted witnesses as saying that the assailant shouted "Britain First!" during and after the attack — a slogan linked to anti-immigrant groups.
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