You can count them on one hand. Just hold up one finger. Among more than 20 of the major U.S. symphony orchestras, only one woman has the top job of principal conductor. But women are making better gains in the nation’s smaller ensembles. Jessica Bejarano is leading the San Francisco Civic Symphony, as well as the path for other women like her trying to shatter gender stereotypes. NewsHour Weekend Special Correspondent Joanne Elgart Jennings reports: