- Associated Press - Thursday, June 19, 2014

DETROIT (AP) - The Wayne State University Law School is hosting an exhibition featuring posters from more than 20 historical and contemporary boycott movements.

Boycott! The Art of Economic Activism opened on Tuesday and runs through Friday at the Detroit school’s Damon J. Keith Center for Civil Rights.

The show is free to the public.

It includes posters from the 1950s to the present and contains such movements as the Montgomery Bus Boycott, the United Farm Workers’ grape and lettuce boycott and divestment from South Africa to protest apartheid.

The traveling exhibition was created by the American Friends Service Committee and the Center for the Study of Political Graphics.

The idea is to use the posters to demonstrate the effectiveness of boycotts as a nonviolent tactic to end injustice and oppression.