Personally I don’t bring my dogs to dog parks in jc area. The risk drastically outweighs any supposed benefits IMO. I’m not a lawyer but IMO you accept a certain level of liability by entering a dog park. It sounds like people know all of these dangerous dogs go there yet they consistently bring their own dogs back I’d recommend avoiding the dog park rather than asking when bad owners will realize they are putting others in danger because that’s not a realistic ask unfortunately