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Black Friday shoppers wait for "door buster" coupons while awaiting the midnight opening of an Emeryville, Calif., Best Buy on Thursday, Nov. 24, 2011. The American holiday shopping season began in earnest Friday as stores opened their doors at midnight _ a few hours earlier than they normally do on the most anticipated shopping day of the year. (AP Photo/Noah Berger)

Black Friday madness

January 1, 1970

A few violent incidents broke out on Black Friday as thousands of shoppers lined up in the wee hours of the morning at Macy's, Best Buy and other stores to get discounts of up to 70 percent on everything from toys to tablets.