In July 1969, TIME published a detailed report on “la causa,” the protest movement ignited by California’s Mexican American farmworkers. Its cover featured the cause’s leader, Cesar Chavez, and the story inside described a “tiny, tough assistant” named Dolores Huerta . Just a few weeks ago, we learned, yet again, how tough Huerta is when she came forward to join other women in claiming that they had been sexually assaulted by Chavez , a lion of America’s left. “I have kept this secret long