Why did Joker receive so many Oscar nominations in 2020?
I find it ironic that it did, given the grab-bag, kitchen-sink way that the movie describes why Arthur Fleck turned into the Joker. The movie makes appeals to conservatives, liberals, and everybody else.
This video gives a quick analysis of what the Joker is about, at least in part. It discusses violent entertainment, family values, domestic violence, and more.