This was the worst massacre in Spain since the end of the civil war in 1939.

This became the worst school-related massacre in United States history.

But for those who remember the details of one of the worst massacres in recent African history, this area has a special significance.

Some of the worst massacres were in this region.

As many as 180 people were killed in that attack, the worst massacre of the conflict.

It is one of the worst massacres since the end of Guatemala's 36-year civil war in 1996.

Seven years ago this village, with some 1,500 people, was the scene of one of Cambodia's worst recent massacres.

It was the worst massacre since the Serbian siege of the Bosnian capital began 22 months ago.

The incident was the worst massacre of civilians since the resumption the conflict on June 11.

"We are concerned that this will be the worst massacre by the aggressor thus far."