Another quote from his speech:
“We can relate easily to the family pain from the killing of innocents at Virginia Tech. Fifty civilians died in Iraq that very day.”
Those Iraqis were killed by terrorists who have the same attitude as Cho; kill anyone with whom you don't agree, anyone who makes you mad.
This speaker seems to think that those Iraqis died only because Americans are there, but those terrorists were killing innocent people before we ever set foot in Iraq, and they'll continue long after we're gone.