Q: What have the crazies to do with right or left wing?

Depends. Whose rhetoric are the crazies playing out? Do words have no effects, or at least on the crazies? Or is it possible that crazies see irresponsible words and somehow take them on board?

This is a wake-up call. Painting it like a one-off, having nothing to do with the poisoning, gun-threatening rhetoric in right-wing politics, we will have missed a valuable opportunity. Already it's going that way; look at this thread.