By Henry Austin, NBC News contributor

NBC -- Shoppers eager to take advantage of early Thanksgiving deals brawled late Thursday as retailers across the country prepared for more crowds on what was expected to be a bumper Black Friday.

After buying a big screen TV, a Las Vegas shopper was shot at around 9:45 p.m. local time (12.45 a.m. ET) late Thursday as he tried to take his purchase home, Lt. Gordon of the Las Vegas Metropolitan Police Department told NBC News.

"As the victim was walking through his complex he was approached by a suspect who fired warning shots which caused the victim to release the television," he said.  

As the thief tried to load it into a vehicle the victim approached him to try and get it back, Gordon added. 

"The suspect fired two more shots and the victim was struck in the leg," he said. "He was not seriously injured." 

Early Friday shoppers started arriving at a Chicago-area Kohl's store just hours after a police officer shot the driver of a car that was dragging another officer responding to a call of alleged shoplifting that came in at around 10 p.m. local time (11 p.m. ET). 

He chased a fleeing suspect to his car when "the car started to move as the officer was partially inside the car," Romeoville Police Chief Mark Turvey told NBC station WBCD. "The officer was dragged quite some distance."

Both the driver and the dragged officer were taken to a hospital with minor injuries. Three people were arrested, police said.

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 7p.m. local time (4p.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. and once they had pacified the customer they also charged with disorderly conduct and resisting arrest, Garfield police told the station. 

Stores have braced themselves for the Black Friday rush despite a Consumer Reports poll this week that found 56 percent of Americans had no plans to shop at all this weekend.

Because Thanksgiving fell on Nov. 28, the latest possible date, there are six fewer shopping days this holiday season than last. The most common reason — named by 70 percent of respondents — was a desire to avoid the crowds. 

A Gallup poll this year found that 53 percent of Americans are very or somewhat likely to do their shopping online, the highest share since Gallup started asking the question in 1998.

NBC News' Patrick Rizzo contributed to this report.