mickey mouse, copyright
In addition to what's already been said about the racist background of Steamboat Willie, please remember that there's not much worth celebrating here - the copyright laws that made this a problem to begin with are still very much there, and even as a symbolic victory it is a hollow one.
The fight is not over until #copyright is abolished.
(No, I will not argue "reform vs. abolition" on this thread. That is a discussion for another time, and one I will only have with people who have done the work of asking themselves what *demonstrable* benefits copyright actually has. Do not argue about this in my mentions.)