"Just as the clash of interests within the Have-a-Little, Want Mores has bred so many of the great leaders it has also spawned a particular breed stalemated by cross interests into inaction. These Do-Nothings profess a commitment to social change for ideals of justice, equality, and opportunity, and then abstain from and discourage all effective action for change. They are known by their brand, 'I agree with your ends but not your means.' They function as blankets whenever possbile smothering sparks of dissension that promise to flare up into the fire of action. These Do-Nothings appear publicly as good men, humanitarian, concerned with justice and dignity. In practice they are invidious. They are the ones Edmund Burke referred to when he said, acidly: 'The only thing necessary for the triumph of evil is for good men to do nothing.'"
(Go read Rules for Radicals by Saul D. Alinsky)