The petition addressed that MasterCard and Visa must stop censoring legal fictional content that complies with the law and platform standards.
Archived version: https://archive.is/20250725225542/https://www.ibtimes.co.uk/mastercard-visa-under-fire-petition-payment-giants-not-police-legal-content-blows-1739406
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It was about 1,000 people from Collective Shout (who have a whopping 40,000 supporters) that got the payment processors to pull the NSFW