Wal-Mart is taking legal action against its organized labor opponents, filing an unfair labor practice charge over widespread protests at its stores across the country — as well as rallies planned for Black Friday, considered the biggest shopping day of the year.

The company filed a complaint on Thursday against the United Food and Commercial Workers International Union, claiming the labor union — one of the nation’s largest — has unlawfully disrupted business by staging protests at Wal-mart’s stores and warehouses around the country over the past six months.

The retail giant, which has 1.4 million U.S. workers, is asking the National Labor Relations Board for an injunction against the rallies and pickets — even flash mobs — that have sprung up at stores nationwide, according to the Wall Street Journal.

“We are taking this action now because we cannot allow the UFCW to continue to intentionally seek to create an environment that could directly and adversely impact our customers and associates,” Wal-Mart spokesman David Tovar said in a statement obtained by Reuters. “If they do, they will be held accountable.”

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