It was Gandhi who made the most significant personal contribution in the history of the nonviolent technique, with his political experiments in the use of noncooperation, disobedience and defiance to control rulers, alter government policies, and undermine political systems. With these experiments the character of the technique was broadened and its practice refined. Among the modifications Gandhi introduced were greater attention to strategy and tactics, a more judicious use of the armory of nonviolent methods, and a conscious association between mass political action and the norm of nonviolence.
Mahatma Gandhi