I Drink Your Blood (1970)
AKA: Phobia, State Farm.
As gruesome as its title suggests, this gore classic is about a young man who gets even with the hippies who gave his grandfather LSD by injecting rabid dog blood into their meat pies. Soon, the rabid rebels turn on a group of construction workers...and themselves. Bhaskar, Riley Mills, Jadine Wong star. 69 min.