In a move that went against the wishes of Sir Alex Ferguson Manchester United defender Rio Ferdinand did not wear an anti-racism shirt from the Kick It Out charity.
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Their numbers swelled to about 5,000 as they set out walking towards the Mexican town of Tapachula.
The unusual creature, officially named Enypniastes eximia, has only ever been filmed before in the Gulf of Mexico.
Donald Trump's intention to scrap a landmark nuclear missile treaty with Russia is a "very dangerous step", the Kremlin has said.