Federal immigration agents pepper-sprayed and shot crowd suppression munitions at newly sworn-in Arizona Rep. Adelita Grijalva during a confrontation with protesters in Tucson on Friday.

A video Grijalva posted online shows an agent in green fatigues indiscriminately dousing a line of several people — Grijalva included — with pepper spray outside a popular taco restaurant.

“You guys need to calm down and get out,” Grijalva says, coughing amid a cloud of spray. In another clip, an agent fires a pepper ball at Grijalva’s feet.

Department of Homeland Security assistant secretary Tricia McLaughlin denied that Grijalva was pepper-sprayed in a statement, saying that if her claims were true, “this would be a medical marvel. But they’re not true. She wasn’t pepper sprayed.”

“She was in the vicinity of someone who *was* pepper sprayed as they were obstructing and assaulting law enforcement,” McLaughlin continued. The comment suggested a lack of understanding as to how pepper spray works. Fired from a distance, pepper-spray canisters create a choking cloud that will affect anyone in the vicinity, as Grijalva’s video showed.

In a separate video Grijalva posted to Facebook, the Democratic representative from Southern Arizona described community members confronting approximately 40 Immigration and Customs........

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