Cities across the U.S., including Seattle, are seeing a new wave of protests Monday as rallies denouncing the election of Donald Trump continued for a sixth day.

In Seattle, students across the city participated in a walkout at 1:30 p.m. as part of planned walkouts across the country.

Students from Franklin, Garfield, The Center School, Nova, Seattle and the University of Washington rallied at Cal Anderson Park on Capitol Hill at 2:30 p.m. Students then marched downtown to meet up for a "Protest for Solidarity" at Westlake Park at 4:15 p.m.

All afternoon, students chanted and marched peacefully. The group never turned violent, as several other cities have seen, including Portland, Ore.

Three adult men were arrested, none of whom were Seattle students. Two of the men assaulted police officers, and one man assaulted another man who was not participating in the demonstration.

Seattle Public Schools said students who participate in the walkout Monday will get an "unapproved absence" but will not face discipline. About 20 middle and high school participated in the protest, and a little over 5,000 Seattle students walked out of class, according to the district.

A spokesperson for Seattle Public Schools said the protests are not sanctioned by the district, but SPS students do have the right to peacefully demonstrate and express their personal views.

The district says school staff are not taking part in the student-organized demonstrations, but staff may be observing students during the protest for safety and security reasons.

In addition, several schools are currently developing lessons and activities, according to a district spokesperson, "to have appropriate, post-election conversations" in school buildings.

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Photos: Students walk out of class protesting Trump