Federal prosecutors unsealed an indictment Wednesday against eight pro-Palestinian activists who are accused of conspiring to run a criminal intimidation campaign against University of Michigan officials while trying to force the school to cut financial ties to Israel.

The indictment describes threats and vandalism at officials' homes, some businesses and the Jewish Federation of Detroit.

"In America, we rule by law not by fear. These alleged threats and attempts to terrorize government officials, businesses, and the Jewish Federation are anti-American. We will counter intimidation with justice," U.S. Attorney Jerome Gorgon Jr. said.