People keep forgetting that we live in a society. If you create a terrorist organization for example and people send you money without the involvement of banks the government won't just roll over for you. The courts can order the seizure of your assets, and you can be charged with obstruction of justice.
But you can still transfer money to a cold wallet you own and then use the cold wallet to send money yourself to a wallet that is in the blacklist.
Generally standing between the government and it's tax money is unhealthy, unless you are wealthy.