Nov. 16- Dec. 2. It’s the fall of 1964. Bloody turmoil over civil rights is spilling onto the streets. A fearful ideology is growing from the conservative right. The threat of nuclear war is palpable. And a little skirmish in the far-off nation of Vietnam just won’t go away. With a presidential election looming, a group of “ad-men” working for Lyndon Johnson unleash the most devastating political commercial ever conceived, the “Daisy ad.” Based on true events, “Daisy” explores the moment in television history that launched the age of negative advertising, and forever changed how we elect our leaders. Showtime is Friday-Saturday at 7:30 p.m. and Sunday at 2 p.m.