If you're a US citizen, please sign the linked petition! And if not, please email your local representative with your concerns about payment processor overreach! Your voice matters, but you have to hit these people where it hurts - right in the voting base.
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I agree on standard petition sites like Change.org, but to quote Phoenix96 above:
"it's not a regular petition, but rather a request to the ACLU, American Civil Liberties Union, to push the petition forward as a request through, and should it not be followed, will use any means necessary, including and especially legal actions in the courts, to force a decision and mandate, to attempt to resolve the matter.
It's not a petition in the sense that it's a bunch of signatures saying "we want ___", but rather an effort from an activist and legal group to attempt to bring about change."