In the past month at a couple of Austin public parks, I've seen a big-ass off-leash labradoodle whatever knock a kid down hard onto the concrete because he wanted to play with the kid (the kid did not know the dog or the owner). I've seen what looked to be a part-boxer off the leash, jump on old dog (on a leash) who couldn't walk well and the owner of the old dog lost her shit (and rightfully so) and was filming the asshole owner and going to identify him and call the cops, etc. (somebody helped her ID the guy since he lived a few blocks over). I've seen off-leash dogs shit in the toddler areas and the owners were assholes about picking it up. I've seen off-leash dogs start two different fights.
A bunch of insufferable assholes who for some reason can't use a fucking leash when there are signs all over about using a leash, are going to hopefully ruin things for all dog owners and start getting dogs banned from some parks or something.
I will say there is a small group of people who have been filming the off-leash owners in public parks and identifying them. I don't know what they plan on doing with it, but they are at least quietly filming the assholes and one mentioned putting their shit on blast on social media, as well as going to the city with a list of names, how bad the problem is, etc. and I wish them well.