As Twitchy reported earlier today, protesters in Ferguson, Mo., are taking to the streets to show their anger about the shooting of an unarmed black teenager named Mike Brown. St. Louis alderman Antonio French, whose tweets we featured in our earlier post, says tensions are rising this evening, and the situation is becoming more volatile. His description of the Vine video above says, “People are blocking police and fire trucks from entering the area. Reportedly answering a call for a heart attack.”

Indeed.