I'm going to tell people they shouldn't walk their dogs off their leashes in my area.
Why are you going to tell people what to do with their dogs?
Because they're annoying and I can't stand them.
People are allowed to walk their dogs however they want, as long as they have proper control over them. If you try to tell others what to do with their pets, then you're going to come off looking pushy and like a jerk. They'll just yell back or completely ignore you.
I know they will ignore me, that's fine with me. I think they should still listen to me and do what I say.
It isn't harming you. I don't get why it is bothering you so much if nothing bad is happening. You should just leave it alone and try to ignore it if it is bugging you.