Showing they're wrong

Kofi Annan has some words of wisdom for the 'root causers':

Rounding on the argument that oppressed people had a right to resist occupation, Mr Annan said this could not include the right to deliberately kill or maim civilians.

He said the root cause of terrorism was the belief by certain groups that such tactics were effective and had the support of people in whose name they were used. "Our job is to show they are wrong," he said.

Show they are wrong, note, as opposed to hmmm-ing, ha-ing, sympathizing and otherwise massaging their belief in the extent of support there is for the killing of innocents.