Would you throw your dog a ball so it lands just past the other person's dogs and let your dog run after it?
Someone did this today. My dogs wanted to run after the ball too, but we're good, however when the lady walked past I said I thought it was a bit mean to throw a ball so close to other people's dogs when they were on a lead. I said it's generally polite to keep your dog with you when passing someone who has their dogs on leads. She said she didn't see why, if her dog was under control why should she bother.