Everyone: despite being technically the cause of this specific case, Collective Shout is not who you should focus on, they are a distraction. The core of the problem are multi-billion dollar payment processors who want you to scare those retards into submission while they keep doing their thing. The censorship came before collective shout, and will continue without them.
Talk to your politicians, but don't neglect telling your friends and family. Tailor your arguments depending on who you're talking to; conservatives? Talk about their suppression of gun companies and if they love trump, talk about the banks targeting him. Liberals? Artistic freedom for sexual minorities, and how conservatives are anti-porn.
Don't let people bog you down over "degenerate" materials, demand they succinctly answer if these corporations should have the right to suppress anyone they choose for any arbitrary with no legal means to fight back. These corporations are integral to digital society and should not have the power they wield.
But most importantly: do something. Just, do something.

Burgers in this thread should know that there is a bill currently squatting in the senate waiting for support that is looking to (and this is a direct quote you can search) "ensure that persons involved in politically unpopular businesses but that are lawful under Federal law receive fair access to financial services under the law".
You should talk to your legislators and get them to support it, BUT remember to tell them to strengthen the section on "Payment card networks" so they can't refuse service to a company just because they hosted a game homos didn't like. Remember that doing something, even if not guaranteed, is way better than doing nothing no matter what anyone says.