Director Todd Phillips has posted the first poster for Joker on his Instagram page. The upcoming drama is a character-driven study of the famous Batman villain that stars Joaquin Phoenix in the title role. Details on the plot are still scarce, but the origin story is supposed to be akin to films like The King of Comedy and Taxi Driver. What’s fascinating about this first piece of marketing is how it sets the tone for how they’re going to sell this movie. This is a far cry from a character poster for Jared Leto in Suicide Squad …