Story highlights Farkhunda was beaten to death in March

A video revealed events to the world

Kabul, Afghanistan (CNN) An Afghan judge sentenced four men to death Wednesday in the mob killing of a woman accused of burning the Quran in March.

Eight other suspects received 16-year sentences. Eighteen others were found not guilty.

On March 19, a mob of male attackers beat and kicked 27-year-old Farkhunda before tossing her off a Kabul bridge, setting her body on fire and throwing it in the river. Like many Afghans, Farkhunda used only one name.

The horrific scene was recorded in a video that resonated around the globe.

The video shows her surrounded by an angry horde of men, standing with her face covered in blood. She is pushed and falls over, and her beating continues with feet, rocks and boards. In the last part of the video, her body is engulfed in flames -- though it's not known whether, by that point, she was already dead.

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