After losing an endorsement deal over sympathetic tweets for a terrorist mastermind, Rashard Mendenhall is fighting back.

The Pittsburgh Steelers running back plans to file a lawsuit against Champion Athletic's parent company, Hanesbrands, for dropping his sponsorship agreement.

KDKA reports Champion whacked Mendenhall after he sent messages on Twitter that showed compassion for Osama bin Laden, the man credited with planning the 9/11 attacks on New York and Washington D.C. that killed nearly 3,000 innocent Americans.

At the time, Mendenhall wrote these messages on his Twitter page:

"What kind of person celebrates death? It's amazing how people hate a man they never even heard speak. We’ve only heard one side."

"I'm not convinced he was even behind the attacks. We have really seen no evidence to prove it other than the government telling us."

After the ensuing backlash, Mendenhall wrote a blog explaining he didn't really support bin Laden and was not against America.

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