content: I don't think this movie has any encoded or hidden messages. I think it's pretty straightforward. Life mistreated this man and now he's going to mistreat life in the form of anarchy, chaos, etc... We've already seen this exact character portrayed by Heath Ledger. There's just so much publicity surrounding this topic that the media is having a field day with it all. You've got people politicizing the film, bringing up the Holmes mass shooting, talking about "radicalized incels", etc... There's just a lot of material here. Then on our side you've got the Clown World meme, and the Joker fits right into there. To me it just seems like everyone is bored and this film has sparked some life into their mundane lives. In a week or so everyone will have forgotten until they release the trailer for the next one.