Hundreds of protesters outside President Trump’s rally in Minneapolis Thursday night set fire to Make America Great Again hats and other memorabilia in an effort to show their defiance to the current administration before police broke up the crowd, reports said.

There were reports that multiple protesters were arrested. One report indicated that protesters threw urine.

TRUMP BELITTLES BIDENS WITH GRAPHIC LANGUAGE AT MINNEAPOLIS RALLY, AS CHAOS UNFOLDS OUTSIDE ARENA

Cell phone video posted by Star Tribune reporter Chao Xiong showed Trump supporters walking through a crowd of protesters outside the Target Center in Minneapolis, shouting, “Lock him up” and “Shame on you.”

A reporter for The Washington Post posted a video on Twitter that appeared to show a protester punch a Trump supporter in the back of the head as he left the rally. The crowd can be heard shouting “Nazi scum! Off our streets!” The video shows a Trump supporter being followed by protesters before someone calls out “There’s a Nazi over here,” prompting the attack.

The apparent Trump supporter was also slapped and pushed before eventually running to safety.

The Minneapolis Star Tribune reported that police deployed pepper spray.

Police officers on horseback and bicycles formed a protective line in front of the arena, according to The Tribune. Officers with riot batons and shields also maneuvered through the crowd of protesters. The Post captured video of one Hispanic family who wore pro-Trump clothing departing from the rally as one protester shouted “He hates you!” The mother repeated “Mexicanos for Trump!" as she left the scene.

Trump arrived in Minnesota as polls show Americans' support rising for impeachment. Democrats claim he used his office to pressure Ukraine into investigating the Bidens for his political gain. Trump insists that he was just making sure the country was doing its part to weed out corruption.

Trump was joined by Vice President Mike Pence, who had a separate schedule of appearances in the state Trump is trying to tip his way next year.

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Trump praised police officers during his rally. USA Today reported that Minneapolis police were not allowed to attend the rally in their uniforms, so they wore, "Cops For Trump" t-shirts.

The Associated Press contributed to this report.