there are no Christians, as far as I know, blowing up buildings.

I guess Dawkins never heard of the numerous "Christians"[sic] who have blown up abortion clinics.

I am not aware of any major Christian organisation that believes the penalty for apostasy is death

Guess he's never heard of the numerous "Christian" anti-abortion organizations and/or the "Christian"[sic] members thereof who have murdered abortion providers.

Christianity might be a bulwark against something far worse.

And that "something" would be...?

Nice try, pete. Guess again.