Every bitcoin you "have" in your wallet is actually an UTXO (Unspent Transaction Output, ie. a number) locked with your private key (I'm simplifying for the sake of the point). When a malicious entity - such as a state, exchange, wasabi wallet, etc- doesn't like someone, instructs to not accept that UTXO, so, your bitcoins would be "tainted" and not accepted. They cannot stop you from sending them your sats, but just act as if no transfer took place. If it's a wallet-level blockage you actually couldn't stream the transaction. The solution would be a combination of mixing, swapping, etc, I guess. DYOR, I'm not 100% sure I got it right all the points, it's an entry.