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In Hoover, Alabama, the scrum in one mall became so violent that paramedics had to be called to treat the injured.
Walmart staff were filmed holding frothing female shoppers on the ground as they waited for security to arrive to carry them out.
The violence was even more severe in Missouri where a 19-year-old man was shot outside a mall as shoppers rushed to snap up cut-price goods inside. He is in a critical condition.
On Friday, millions more flocked to shopping centers across the country as yet more deals became available.