[mfer]

Sexual assault of children is illegal. Sedition is only illegal in rare circumstances. In the US anyway.

[rhizome]

Do you think any of those circumstances are happening on FB? Does the supposed rarity make them harder or easier to find?

[mfer]

If FB is unaware of the illegal sedition they have plausible deniability.

In this case, MasterCard no longer has plausible deniability. This increases their liability.

Imagine someone at a liquor store sells beer to someone. Then, they learn the ID is fake and the person is lying about their age. Once they know someone is doing something illegal they can be held liable if they continue to sell the person beer.

Note, I'm not getting into right an wrong here. I'm getting into legal liabilities. Large companies like MasterCard are conservative (legally speaking) in how they handle this stuff.