A confrontation between protesters and legislators in St. Paul on Tuesday underscored the nation's deepening political divide in which lawmakers in at least eight states are considering crackdowns on demonstrations.
Chants and shouting erupted after a House committee voted to pass a GOP-led measure that could make protesters financially liable if police must intervene.
Minnesota is joining a growing number of states looking to discourage large, disruptive protests.
Measures aimed at toughening laws against demonstrators have been introduced in North Dakota, Iowa, Michigan, Indiana, Colorado, Virginia and Washington state as protests have proliferated in recent months over issues ranging from police shootings to oil pipelines.
"I don't think this is a coincidence that this is happening at a time in our nation where there are widespread movements led by people of color for racial equality," said Teresa Nelson, legal director of the American Civil Liberties Union (ACLU) of Minnesota. "It is very troubling that we would see this kind of suppression and these attempts to intimidate people who are engaging in constitutionally protected speech and civil disobedience."
In Minnesota, groups have waged large rallies after the police shootings of Jamar Clark and Philando Castile, demonstrations that blocked roadways, disrupted the airport and resulted in a weekslong encampment at a north Minneapolis police station.
Rep. Nick Zerwas, R-Elk River, said residents are tiring of the disruptive protests.
"I think there is a push on the part of the people who I represent and I think Minnesotans think it's time we get tough on people who block freeways and try to close down airports," he said in interview.