Not much backinfo. The CCTV footage shows a man take on a cop with a knife, but armed with firepower, the cops ends up shooting the citizen.
While clearly armed with a blade, the citizen appears to primarily want to chase the tyrant away, as opposed to kill it. When they appear in the video, the cop is being chased but the citizen doesn’t really thrust the blade violently at him the way we tend to see in knife attacks. Rather he uses the blade the scare the cop away.
As the chase continues, the cop pulls out his firearm and shoots the citizen a few times. Once gunned down, two people, a man and a woman, come out of the house from where the citizen chased the cop away, and showing clear signs of distress over the cop shooting their relative, they use their bodies as shields to stop the tyrant from finishing the citizen off. The cop is later joined by another and as citizens keep pointing fingers at them, the pair kind of turns around and walks away.
The initial backinfo I got suggested that the incident happened in Ecuador. In fact, it happened in Rosh HaAyin, Israel. The knifeman was mentally ill. He was killed by the cop.
Props to Best Gore member @mr-qaz