it's sort of strange that a mainstream candidate with enough support to win the whole election is considered controversial, plenty public figures endorsed hilary and none received the level of backlash that palmer did. max temkin even funded a similarly cringey billboard campaign:
unless we are to enforce a standard of public apoliticism for public figures across the board, uniquely singling out endorsements on one side regardless of wealth doesn't seem like a good way to generate effective discourse
http://www.eurogamer.net/articles/2016-09-23-report-oculus-r...
http://www.eurogamer.net/articles/2016-10-15-anti-trump-ad-a...
unless we are to enforce a standard of public apoliticism for public figures across the board, uniquely singling out endorsements on one side regardless of wealth doesn't seem like a good way to generate effective discourse