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    FILE - In this Nov. 23, 2010 file photo, a woman looks at a DKNY holiday window display, in New York. You've probably heard of Black Friday, but you may not know exactly what it is. Here’s a little history and what to expect this year during the official kickoff to the holiday shopping season.(AP Photo/Mark Lennihan, File)

    Black Friday madness

    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.