useless trivia: What Word Means: Stupid - Idiotic?

Questions

what 1936 quasi-documentary has been known as tell your children, doped youth and love madness?

who was the leader of czechoslovakia when the russians rolled in, in 1968?

what carly simon hit became the music for a heinz ketchup commercial?

who heard it through the grapevine in 1968?

who did yusufa k. lule replace as his african country's leader in 1979?