Hundreds protest president by mooning Trump Tower in Chicago

CHICAGO, IL -- Chicago saw a very different kind of protest against President Donald Trump over the weekend and many are probably hoping this doesn't catch on.

Hundreds of protesters gathered along the Chicago River, dropped their pants and mooned Trump Tower.

The group organized on Facebook.

Activists said their "cheeky" statement is a different approach to political activism. They sent a message to President Trump for refusing to release his tax returns.