Rey, Diana Prince, and Belle may have anchored some of the biggest box office hits of 2017, but they were the exception to the rule. Hollywood’s glass ceiling remained firmly in place as studios failed to back female-dominated movies last year, according to a new study by the Center for the Study of Women in Television and Film at San Diego State University. In 2017, just 24% of protagonists in the 100 highest grossing films were women. That was a drop of five percentage points from 29% in 2016. The decline comes as a surprise given that the three most...