'You Build That Wall, We Tear It Down," Philadelphia Protesters Chant

Hundreds of protesters marched for hours in Center City Philadelphia on Thursday, January 26, as President Donald Trump attended a Republican retreat nearby.

Thousands were expected, according to a news report, and the group was still marching hours after the event kicked off.

This video shows people chanting, “You build that wall, we tear it down,” referencing Trump’s plans to build a wall along the border with Mexico. Credit: Instagram/Anne Convery via Storyful