Chicago Community Orgs, an ex-Catholic priest, Saul Alinsky and a Pharisee doctor of Jewish Law

The Gamaliel Foundation was founded in Chicago in 1968 to assist the Contract Buyers League, which worked to assist African-American home buyers in the city’s West Side. Gamaliel was reoriented to focus on community organizing when Gregory Galluzzo was hired as executive director in 1986.[1] Seeing its basic function as training and developing leaders in low-income communities, Gamaliel’s goal is "to assist local community leaders to create, maintain and expand independent, grassroots, and powerful faith-based community organizations"[2] that have the power to influence political and economic decisions that impact cities and regions. The name "Gamaliel" refers to the Biblical wise man who was a teacher to St. Paul (see Acts 5:38-39; and Acts 22:3), whom Saul Alinsky considered to be the first great congregation-based organizer.

Gamaliel Foundation works in the community organizing tradition of Alinsky, who began his work in Chicago with the Back of the Yards Neighborhood Council in 1939. Following Alinsky’s death in 1972, his Industrial Areas Foundation, under executive director Edward T. Chambers, moved toward a congregation-based organizing model, emphasizing training and leadership development. Gamaliel has developed along a similar path under the direction of Galluzzo, a former Roman Catholic priest who got his introduction to community organizing in the early 1970s in Chicago, where he worked with the Pilsen Neighborhood Community Council, mentored by such organizers as Tom Gaudette and John Baumann (the founder of PICO National Network).

https://en.wikipedia.org/wiki/Gamaliel_Foundation