DENVER (CBS4) – Protesters in downtown are demanding President Donald Trump release his tax returns.

The march began at 10 a.m. in Civic Center Park with speakers, and is expected to last into much of the afternoon.

The group wants the president to release his returns by Sunday, tax day in the United States.

“President Donald Trump’s team has gone back and forth over whether or not they will be releasing his taxes, and no date has been set in the event that they are,” the group posted to Facebook.

The march is planned to go from Civic Center Park, down 15th and Welton Streets, back down Broadway Street to Civic Center Park.

(credit: CBS)