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As a believer in capitalism and liberty, I understand Walmart’s desire to squeeze as much money out of the Christmas shopping season as possible. But if we don’t want to invite government control, we have to be able to police ourselves, and Walmart just isn’t doing that. Opening on Thanksgiving night is not only a cruel thing to do to your employees, it brings out a tired crowd — many of whom have probably had too much to drink — and that only increases the likelihood of this:

At least three people got into a fight in the parking lot of a Wal-Mart in Rialto, Calif., because shoppers were cutting in line, Sgt. Nicholas Borchard told NBC Southern California. Two were taken into custody after the fight at around 7 p.m. local time (10 p.m. ET), he added. A police officer suffered a minor unknown injury.

A man in Claypool Hill, West Virginia, was slashed to the bone with a knife after threatening another man with a gun in an argument over a Wal-Mart parking spot, Tazewell County Sheriff Brian Hieatt told NBC station WVVA. Both faced charges after the incident that happened at 6:30 p.m. the station reported. …

Another shopper was charged with aggravated assault on a police officer after getting into an argument with a New Jersey Wal-Mart store manager about a television set, police told NBC New York. Officers arrived at the scene at 6:39 p.m.