User A -> illegal drug money -> tumbler

User B -> illegal Ponzi money -> tumbler

User C -> terrorist financing -> tumbler

Tumble - Tumble - Tumble

Tumbler -> User A = illegal Ponzi money and terrorist financing

Tumbler -> User B = illegal drug money and terrorist financing

Tumbler -> User C = illegal drug money and illegal Ponzi money

User A, B, C -> Coinbase

Coinbase = Sorry we've confiscated your bitcoins because they were blacklisted.

LOL