Details about what sparked a violent incident a pool party in McKinney, Texas, are still forthcoming but we do know that video from the scene shows 41-year-old police officer Eric Casebolt aggressively handling a group of black teens, physically forcing a 15-year-old girl to the ground and drawing his weapon on the other teens around her.
That video -- shot by 15-year-old Brandon Brooks -- has already been viewed almost 9 million times and sparked outrage in McKinney and beyond. Educator and activist DeRay McKesson was among the hundreds of outraged protestors who gathered in the Texas city 30 miles north of Dallas on Monday night.
DeRay shared photos and video from Monday night's protest:
Others took to Twitter to share their thoughts: