>What happened to assigning responsibility to the responsible party? I think this is a good example of exactly that. Just because someone is at the end of a ca

>What happened to assigning responsibility to the responsible party? I think this is a good example of exactly that. Just because someone is at the end of a causal chain does not make them solely responsible. That's why in tort law, damages are often apportioned among defendants. Presumably, Spain already extracts fines for littering from the end user, this is just adding some liability to another culprit in the causal chain.