With the statement above from mk4, we believe that DAI is the only stable coin that can’t be frozen, at least as if the time the thread was posted.
First of all, no one will support any criminal activity here.
But if you are looking for a means to hide money and don't want it to be frozen, why use stablecoin in the first place? Why not use other means like mixing the coins and hiding the source where it was gotten from and leaving it either on bitcoin or coins like Monero, where you know they are top privacy coins?