If she were to be unchained for 10 seconds, she would leap the wall and attack someone. She recognizes that if she were to kill me, there'd be no more food or water or brushing or fetch or petting. Dear Mr. Knowledge, Anyone who loves a dog does not keep it on a chain for 15 years. Your assertion that she was abused by some do-gooder assholes like myself and the City Council is not only insulting in its crudity but very illogical. I maintain that the reason your dog continues to hate people is because you have kept her on a chain for 15 years.
Miserable animals are often aggressive.
I strongly suggest that you build a high, strong fence around your yard so that she can run free and not escape. Walk your dog every day. Get a trolley if you cannot build a fence. I wish your dog well. Greens Vote Their Dreams Dear Alibi, As Al Gore has said, an election is not a popularity contest.