4 special film screenings coming up in Marin

• “American Agitators,” a documentary about labor organizer Fred Ross Sr. and his legacy, will be shown at 4:30 p.m. Saturday at the Lark Theater at 549 Magnolia Ave. in Larkspur. Admission is $11 to $14. Go to larktheater.net.

• “The Princess and the Frog,” Disney’s animated adaptation of the “Frog Prince” story set in New Orleans during the Jazz Age, will be shown at 2:30 p.m. Feb. 4 at the Civic Center Library at 3501 Civic Center Drive, room 427, in San Rafael. Admission is free. Popcorn will be served.