WATCH LIVE: Tensions surge after Donald Trump cancels Chicago campaign rally

Republican presidential front-runner Donald Trump is scheduled to hold a rally in Chicago starting at 7 p.m. EST.

The rally comes hours after further reports of violence by his supporters, this time at an event in St. Louis. Trump backers were captured on video insulting critics of the candidate's anti-Muslim rhetoric, while a local activist was bloodied outside that rally.

WMAQ-TV reported that protesters have already been kicked out of the Chicago rally, which is being held at the University of Illinois-Chicago Pavilion.

The event is also being streamed online, and can be seen below.