Co-written and directed by Todd Phillips best known for his comedic work, including The Hangover trilogy first released in 2009, Joker is unlike any other movie based on a comic book character because it is much more of a character study of a very dark and deranged individual who eventually becomes the predominant arch-nemesis of Batman. Similar to the iconic 1976 Martin Scorsese film Taxi Driver, the story follows a clearly mentally ill man who eventually descends into violent madness after feeling persecuted by a morally bankrupt society that constantly bullies him for his idiosyncrasies. Living in the corrupt and economically depressed fictional Gotham City in 1981 based on the gritty New York City of the time, Arthur Fleck, played by the terrific Joaquin Phoenix in a very committed and disturbing role, works as a hired clown in the city and lives in a dingy apartment with his sick mother. His feeling of hopelessness and the pervasive depression surrounding him in the decaying city filled with a wealthy and greedy elite contribute to his horrifying psychological breakdown towards the middle of the movie. What really sets him off is seeing his comedic idol and late night television host Murray Franklin, played by Robert De Niro whose portrayal of Travis Bickle in Taxi Driver very much resembles Arthur Fleck, make fun of his inability to be a stand-up comic. Dressed up as a disheveled cloud who wants to be referred to as Joker, Arthur finds himself in a extremely violent situation that eventually spirals out-of-control and leads him to a destructive and terrifying psychosis. His actions eventually lead to a citywide protest against the rich, particularly mayoral candidate Thomas Wayne who is better known as father to Bruce Wayne later to become Batman. At the end, the entire city devolves into chaotic riots in which several people are brutally killed. Overall, I found it to be a disturbing yet well done anti-hero psychological drama that is led by a truly remarkable performance given by the extremely talented Joaquin Phoenix. It is definitely not for the faint of heart because it does contain a fair amount of violent moral depravity that has made the movie somewhat controversial with critics and audiences alike.