The Assassination Of Malcolm X

.... Organizations that claim to advance the struggle of the oppressed and exploited are not helpless in the face of government disruption efforts. The leadership of every such organization that claims to fight for the oppressed has the responsibility to conduct itself in a manner that will make the movement, its organizations, and members as impervious as possible to the stock-and-trade of secret police operations: agent-baiting, poison pen letters, and the resolution of political differences by acts of thuggery, murder, and so on.

http://www.themilitant.com/1995/5921/5921_28.html