Hundreds of protesters were gathered Sunday night in the Chicago near Adams and Wabash outside of the Art Institute of Chicago.
First Lady Michelle Obama was inside the institute hosting a private dinner for the spouses of NATO leaders.
"We're not leaving," the protesters chanted as rain poured down upon them. Some started dancing as police looked on.
The group chose Michigan Avenue near the statue of a horse (presumably at Congress Parkway) as their rally point after an earlier protest at 22nd and Michigan dispersed. It's not clear if they were targeting a protest at Mrs. Obama.
Police responded to the scene in front of the Art Institute of Chicago in force. Officers in riot gear, sometimes three deep, stood between the Art Institute and the protesters, ostensibly prepared for another clash. Police superintendent Garry McCarthy was on the scene.
Shortly after 11 p.m., the demonstrators again were on the move. They traveled west on Adams Street before heading north on State Street.