Zizek, atheism, Hume

I meant to note this last week, but neglected to. Hopefully the link still works. It's the ever-odd Zizek making a case for "restoring the dignity of atheism, one of Europe's greatest legacies and perhaps our only chance for peace..."

...the lesson of today's terrorism is that if God exists, then everything, including blowing up thousands of innocent bystanders, is permitted — at least to those who claim to act directly on behalf of God, since, clearly, a direct link to God justifies the violation of any merely human constraints and considerations. In short, fundamentalists have become no different than the "godless" Stalinist Communists, to whom everything was permitted since they perceived themselves as direct instruments of their divinity, the Historical Necessity of Progress Toward Communism.

He makes a couple of interesting points, but he also refers to David Hume as "a believer." This is, um, misleading I think. Any thoughts on that?