In the case of ABC cancelling Roseanne, the solution is simple.
Boycott ABC sponsors.
Twitter storm with quotes from ABC News Anchors and other reporters using the ABC platform to deride, insult, POTUS.
Tweets focus on BOTH of these reasons for boycott.
Boycott doesn't need to be organized at all.
Each person who decides to boycott, just does it. Tweets about it.
You've forgotten how to play the game.