One of Donald Trump's leading supporters -- the right-wing activist, Charlie Kirk -- has been shot dead. He was taking part in an outdoor debate at a university in Utah when he was hit by a single bullet. Video footage showed him slump in his seat on a stage in front of a large crowd at Utah Valley University in Orem. President Trump described him as legendary. He has ordered flags to be flown at half mast until Sunday. Also: Life on Mars? 'Leopard-spot' rocks could be biggest clue yet, and are you a hugger?
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