As Twitchy reported early this morning, chaos ensued after police in Berkeley, Mo., shot and killed 18-year-old Antonio Martin, whom investigators say pointed a gun at a police officer. Protesters, some of whom insisted Martin had no gun, immediately descended on the area in a clash with police, and tonight regrouped to shut down the highway in protest.

Mashable’s Christopher Miller was on the scene tonight and provided some dramatic photos of the demonstration, while Ferguson protest organizer DeRay McKesson posted some Vine videos (Note: language warning).

Freedom of speech apparently extends only into the middle of the highway.

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