Best Psychopath movies of 1970s that are oscar winners or nominees

Actors : Albert Brooks, Robert De Niro, Cybill Shepherd, Jodie Foster,
Directors : Martin Scorsese,

A mentally unstable Vietnam War veteran works as a night-time taxi driver in New York City where the perceived decadence and sleaze feeds his urge for violent action, while attempting to save a preadolescent prostitute in the process.

Actors : Malcolm McDowell, Warren Clarke, Patrick Magee, Michael Bates,
Directors : Stanley Kubrick,

In the future, a sadistic gang leader is imprisoned and volunteers for a conduct-aversion experiment, but it doesn't go as planned.

Actors : Elton John, Ann-Margret, Roger Daltrey, Oliver Reed,
Directors : Ken Russell,

A psychosomatically deaf, dumb and blind boy becomes a master pinball player and, subsequently, the object of a religious cult.

Actors : Martin Balsam, John Cassavetes, Charlton Heston, Beau Bridges,
Directors : Larry Peerce,

A psychotic sniper plans a massive killing spree in a Los Angeles football stadium during a major championship game. The police, led by Captain Peter Holly (Charlton Heston) and SWAT ...