Once again the law is not about justice, the bad guys can do whatever they want and the law abider have their hands tied.
I often have this problem, I have off-street parking near Bondi Beach, one guy said he got fined for illegally parking so he felt he could park anywhere that would not accrue a fine, with no concern about the owners parking at all.
I have things I leave in my parking spot, the clown just move them and park with full knowledge that noting can be done