Why dont Palestinians now try a leader like Gandhi or a Martin Luther King ?

Or Nelson Madella ....its been proven ....Violence ..wins no friends ..just enemies ....since violence has not worked ..in middle east ......why not now try ..non-violence ....its a strong man's weapon ..and can shame your opponents into submission more decisively than guns ...why not try the weapons which ...rips the soul of your opponents ..than just ...firing bullets into his body ???