6 p.m.

About 400 people have marched in Chicago, some to protest recent police shootings and some to recognize May Day's message of workers' rights.

Seventy-three-year-old activist Richard Malmin says he participates every year but that this rally is bigger due to the death of Freddie Gray, whose spine was severed while in Baltimore police custody last month. Activists added anti-police brutality to their messages.

Dozens of Seattle protesters at a Black Lives Matter event joined hundreds who gathered for workers' and immigrants' rights. About 1,000 are marching in Manhattan.

High school students who walked out of school are among hundreds who marched downtown in Minneapolis, protesting Freddie Gray's case and in support of Black Lives Matter members who appeared at a hearing related to December arrests.

4:30 p.m.

A protest in Denver that drew about 25 people has kept its focus on inequality rather than police brutality issues that several other protests around the country planned to rally against.

Demonstrator David Garner says he's concerned about economic inequality, especially for people of color. May Day is historically a day where labor supporters rally for workers' rights.

Friday's protest near the state Capitol had been mostly peaceful unlike Wednesday night when Denver police arrested 11 people during a demonstration over the death of Freddie Gray. Gray died after his spine had been severed while in Baltimore police custody. Charges against six officers were announced Friday.

New York City union and immigration activists are planning to gather in Union Square to join Freddie Gray protesters to march in solidarity.

2:30 p.m.

Some parents are bringing their children to protests in Chicago, using it as a teaching tool on how to perceive police officers.

Meredith West was informing her 9-year-old daughter that when encountering a police officer, she should stay calm and keep still.

The mother and daughter had joined a couple dozen families on Friday who marched on Chicago's West Side, protesting police brutality.

One 8-year-old had told the Associated Press that police officers are there to protect people, not hurt them.

In New York, police have asked demonstrators from labor and immigrant rights groups to work with them ahead of planned protests.

The San Jose Mercury News reports that hundreds in California who marched to City Hall in Oakland were mostly peaceful. Other protests are planned in several California towns.

12:30 p.m.

A group of Chicago protesters has demanded an end to police brutality in support of Freddie Gray, who died after his spine was severed while in police custody in Baltimore last month.

Many demonstrators were carrying signs that read: "Police Brutality Must Stop." They were marching Friday around a fountain on the city's West Side.

In California, crowds were just starting to gather for a rally at an Oakland train station. Labor, immigrant and civil rights activists in several California cities are expected to call for civil rights and an end to police brutality. Protests are planned for San Francisco, Los Angeles, Anaheim and Riverside County.

11 a.m.

Activists across the United States are gearing up for marches and protests to mark May Day and plan to broaden their message to include issues of police brutality.

Events are being held Friday in cities like New York, Denver, Seattle, Chicago and Portland, Oregon.

May Day has historically been a day when demonstrators rooted deeply in the labor movement call for workers' rights. But in recent years, immigration reform and civil rights issues have been adopted.

This year, marches are planned in support of "Black Lives Matter," a growing movement in the wake of a series of deaths of black men during police encounters. Protests in Philadelphia and Baltimore on Thursday were in support of Freddie Gray, who died a week after police took him into custody.