Throughout most of our nation’s history—from the days of the abolitionist movement through the civil rights movement—racial justice advocacy has generally revolved around and the strategic mobilization of public opinion.

Grassroots organizing.

Explanation:

Grassroots organizing, the term that fills the gap, is roughly a gropu of people drawn together to adress certain specific topics that troubles them. It is form by a short number of people that want to work together to pursue a common goal, adress a common problem, etc. As the exercise details, this type of organizing revolved strongly around certain topics just as the racial justice or to fight for several rights for minorities.

would it be plagiarism to copy and paste off of here? ?