“Finding the Future of Public Television” is the topic of a day-and-a-half workshop backed by CPB in Los Angeles on Friday and Saturday, Oct. 14-15. Speakers include CPB programmers Michael Pack and John Prizer, leftie performer Harry Shearer, conservative producer Lionel Chetwynd, former studio chief Frank Price and other producers and writers. They’ll debate whether PBS can “fully represent America’s diverse culture.” Organizer of the workshop, the conservative American Cinema Foundation, will hold it on AFI’s Western Avenue campus.