Two Chicago-area sports journalists gathered the tweets directed at them and asked men to read them to their faces. The result went viral.
Almost 25 years have passed since the town of Halabja in northern Iraq suffered the worst chemical weapons attack ever perpetrated against a civilian population.
At least 5,000 people are thought to have died in what is now seen as a campaign of genocide launched by Saddam Hussein against the Iraqi Kurds.
The BBC’s world affairs editor John Simpson was one of the first international journalists to reach Halabja in 1988, and he went back to meet some of the survivors.