Although Saul Alinsky, the founding father of modern community organizing in the United States, passed away in 1972, he is still invoked by the right as a dangerous harbinger of looming insurrection. And although his landmark book, Rules for Radicals, is now nearly 45 years old, the principles that emerged from Alinsky's work have influenced every generation of community organizers that has come since.

The most lasting of Alinsky's prescriptions are not his well-known tactical guidelines—"ridicule is man's most potent weapon" or "power is not only what you have, but what the enemy thinks you have." Rather, they are embedded in a set of organizational practices and predispositions, a defined approach to building power at the level of local communities.

Historian Thomas Sugrue writes that Alinsky "never had much patience for elected officials: Change would not come from top-down leadership, but rather from pressure from below. In his view, politicians took the path of least resistance."