Denver police arrested several people during Tuesday's demonstration against ICE raids in downtown Denver after an early evening protest at the Colorado State Capitol. According to the Denver Police Department, 18 people were arrested.

The Denver Police Department confirmed several people were arrested on Tuesday night; three people were arrested for graffiti, one for interference with police authority, one for unlawful throwing of projectiles and failure to obey a lawful order, seven people for obstruction of streets and failure to obey a lawful order, two for obstruction of streets, failure to obey a lawful order and interference with police authority, one for second-degree assault, and two for second-degree assault to a peace officer. 

Denver police confirmed with CBS News Colorado that officers deployed smoke and pepper balls to disperse crowds that were blocking roadways. The Denver Police Department stated, "...pepper balls are typically fired at the ground as a means of deploying the powdered substance into an area."

A large crowd was seen reacting to smoke in the air near 20th Street and Little Raven Street in Denver on Tuesday night. 

Police also blocked the entrance to Interstate 25 at Broadway so marchers couldn't enter, and there was another large police presence at Market Street and 20th.

Break-off groups from an earlier peaceful protest against Immigration and Customs Enforcement grew more chaotic as the night went on. Denver police told CBS News that rocks and bottles were thrown at officers near Coors Field.

Similar confrontations have been happening in several other cities across the U.S., including Los Angeles. Protests and marches have been going on there for days as demonstrators have been clashing with police. Many protests -- including in Texas, in Chicago, and now in Denver -- have come about in response to the situation in California.

"We organized this emergency protest to stand in solidarity with the people of Los Angeles and to reject the Trump administration's violent deployment of military and law enforcement against immigrant communities. This is about more than one city—this is about defending our families, our freedoms, and our future. When those in power spread lies about immigrants to justify fear and violence, we must rise together to protect the dignity and safety of all people. Colorado showed up because we believe in a country rooted in justice, not intimidation," said Raquel Lane-Arellano, Communications Manager, Colorado Immigrant Rights Coalition, in a statement to CBS Colorado.