https://reason.com/2020/12/10/visa-and-mastercard-submit-to-politicians-trying-to-put-the-squeeze-on-pornhub/

"Mastercard and Visa today announced that they will no longer let customers use their cards on the adult video site Pornhub. This new policy was prompted by political pressure, making it the latest government victory in a long, censorious quest.

Governments can define actual actions as "crimes" and threaten dire consequences for those actions, but the intangible contents of the human mind are forever out of their reach. So officials covet the next best thing: the power to stop individuals from sharing the products of those minds—ideas, fantasies, art—with others. In America they are constrained by the First Amendment, and so for centuries they've dreamed up ways to circumvent that restriction."