When is it OK for a cop to kill someone?

"Oh shit," the man says a few times, as two police officers get out of their patrol car and approach another man, who is shouting and holding a knife, on the street. "They got their guns out."

Then, a series of rapid gunshots. Nine bullets.

"Oh my god," says the man, who had filmed what happened on his cell phone. "They just killed him."

The witness captured the shooting death of 25-year-old Kajieme Powell by two St. Louis police officers outside a convenience store in August, 10 days after a white police officer shot and killed Michael Brown in a nearby suburb. Police released the footage a day later in the name of transparency. But the disturbing video, which you can see here, prompted more questions instead. People who watched the footage were shocked at how quickly the officers shot Powell, barely 20 seconds after they arrived on scene. Read more...

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