we have similar issues on our greenway, especially with the high energy little ones. They are cute but my Malamute really gets revved up by them, and I had to resort to a gentle leader which sometimes does NOT give me the control I need. I guess I appear as antisocial- I go traipsing off the path into the greenery a bit when I view a problem coming our way. I adhere to the no touch, no talk, no eye contact mantra that Cesar Millan has taught- I'll nod to the dog owners but keep on my own course. You have to do what is right with your own dogs. The dog park is a no-go for us, you are correct there that too many owners can't or won't control their dogs.