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Supermarket
in the UK are wearing body cameras to protect
. Customers are punching or pulling
on staff. Sales assistants and checkout staff are
. They are stressed and
about their safety. The UK's
supermarket said the number of
on its workers has gone up by 30 per cent in a
. More than 200 of its workers are attacked each
. Thousands more are shouted at and
abused every day.