It was a brutal killing which captured the attention of the US and the world. But the death of George Floyd wouldn’t have caused such an outcry if it hadn’t been captured on camera.
The person who shot that famous video was 17-year-old Minneapolis resident Darnella Frazier. Her footage, along with other angles captured by other witnesses on that day in late May, galvanised a social media wave and prompted protests around the world.
But are viral videos really an effective check on police abuse? We talk to the experts, look at the evidence – and talk to witnesses and people on the front lines of the protests.