“Manson” (9 p.m., History): Decades after his murderous mayhem dominated headlines,

“Manson” (9 p.m., History): Decades after his murderous mayhem dominated headlines, Charles Manson continues to fascinate. “Manson” is a new documentary that vividly details how he transformed a group of passive hippies into a gang of brutal killers.

“The Last Truck: Closing of a GM Plant” (9 p.m., HBO): “The Last Truck” is a poignant documentary that puts a face on the plight of the automaking industry by chronicling the final months of a plant in Dayton.