Interesting…most, if not all, violence this Black Friday has been at a Walmart.

usnews.msnbc.msn.com

Several of the incidents took place at Wal-Mart stores as millions of Americans loaded up on holiday purchases.

Update 12:17 p.m. ET: A robot removed a suspicious device that led to the evacuation of a Wal-Mart store in Cave Creek, Ariz., Maricopa County, sheriff’s deputies said.

Update 11:57 a.m. ET: An off-duty police officer used pepper spray on shoppers at a Wal-Mart in Kinston, N.C.

Updated 10:55 a.m. ET: A Rome, N.Y., man was charged with disorderly conduct after a fight that broke out the moment Black Friday shopping began at midnight, NBC station WSTM of Syracuse, N.Y., reported.

Several shoppers at the electronics department at a Wal-Mart store were pushed to the ground, and several fights broke out

Updated 10:39 a.m. ET: Police said they were investigating a possible shooting in the parking lot of Valley West Mall in West Des Moines, Iowa, NBC station WHO reported. There was no immediate report that anyone was injured.

Updated 9:50 a.m. ET: A 55-year-old shopper was shot and wounded during a robbery near a Wal-Mart in Myrtle Beach, S.C., NBC station WMBF reported.

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Updated 9:45 a.m. ET: An explosive device was found at a break room at a Wal-Mart in Cave Creek, Ariz., according to reports Friday.

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Updated at 9:40 a.m. ET: A Black Friday shopper was shot and critically injured during a robbery outisde a Wal-Mart in San Leandro, Calif., early Friday, police said.

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Updated at 7.30 a.m. ET: An angry woman used pepper spray when Black Friday bargain-hunters tried to cut in line at a crowded Wal-Mart store in Los Angeles