can you go to the park at a different time, when the level of ignorance is least? the concept of a dog park and the value of such socialization, in theory, is a great one. however, what i have found is that the people who take their dogs to these parks aren't always the brightest berries on the bush! for this reason i do not go. my dogs have specific playdates where they are supervised by me and the other dog owner for socialization and exercise. i think dog parks can actually do more harm than good. i can control my dogs very well, but i cannot expect to control others. every little thing influences them -- good dogs, bad dogs, good owners, bad owners. unfortunately you are not gonna change the behavior of the not so smart owners. however if you continue to get stressed and upset with "jumpy" your dog can pick up on those vibes and eventually could become stressed, aggressive, etc at the dog park. i would seriously think about adjusting my time at the park.