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Twitter.com

Mask hysteria is bringing out the worst in people who believe it is their duty to police free-thinking citizens who choose not to wear a mask.

A viral video on Twitter.com shows a white male "Karen" assaulting a Black man for not wearing a mask.

When the customer pushed back, the man began screaming, "WTF? You assaulted me. Call 911! He assaulted me! Do NOT give him his food!"

After the shop keeper handed the customer his pizza, the male Karen destroyed a display case. "You shouldn't have done that. He assaulted me!" the man yelled, before leaving the store to pursue the customer.

Twitter users noted that the man wasn't wearing his own mask correctly. Nor was he practicing social distancing.

"He's screaming call 911 while holding a phone," tweeted @TPostMillennial. "Man, those masks really do keep oxygen from reaching the brain. And so guess that display case pushing isn't violence either."