By: KDKA-TV News Staff

PITTSBURGH (KDKA) — As a video of protesters clashing with diners in Pittsburgh has gone viral nationwide, President Trump has spoken out with commentary on the incident.

READ MORE: Student In Critical Condition After Shooting Outside Oliver Citywide Academy

In a tweet posted Tuesday morning, President Trump said the following:

“BLM Protesters horribly harass elderly Pittsburgh diners, scaring them with loud taunts while taking their food right off their plate. These Anarchists, not protesters, are Biden voters, but he has no control and nothing to say. Disgraceful. Never seen anything like it. Thugs!”

Pittsburgh Police say they are reviewing video of the incident. 

READ MORE: Hillman Foundation Offers $2M For Projects That Help Improve Lives Of Older Adults

U.S. Attorney Scott Brady calls the video “unacceptable” and says he’ll work closely with police “to identify and hold these provocateurs accountable.”

The couple in the video, who asked to remain anonymous say they say they support the Black Lives Matter movement, but the group who caused the disruption is not part of the movement.

MORE NEWS: Jeannette Pagans Member Gets 10 Years On Drug Trafficking Charges

President Trump later tweeted that if Democratic Presidential nominee Joe Biden’s polling numbers weren’t going down, he wouldn’t be visiting Pittsburgh.