How Tom Friedman knows that rocks aren't peaceful

Michael Widlanski comes up with a Tom Friedman story I had not heard before this week. Friedman knows very well that rocks are not a peaceful means to a peaceful end. He was attacked by Palestinian Arab rock throwers who stoned his car on Jerusalem's Salahadin Street in 1988, just before leaving his job as the Jerusalem-based bureau chief of the Times. Friedman did not think of rocks then as