We have a kids playground in the center of our apartment buildings, covered in fake grass with the usual kids playground equipment. Grassy areas to the sides. Since it's Easter, I was out with my kids and keeping an eye on a few of the neighbours kids (all playing together). A neighbour came out with her dog, massively straining at its leash, and walked right onto the fake grass, next to the kids, and let it poop right there. As she was putting it in a bag, I asked "Sorry, I don't mean to be a jerk, but could you keep your dog off the kids playground please? As well as this being fake grass, so hard to keep clean, one of the kids is really scared of dogs". She said yes, then proceeded to let it pee under the slide and dragged it back into her building. I didn't say anything else, but over the past few days this woman has made it clear she's massively angry about the whole thing. IDK, I think she's insane, but I'm considering apologising to keep the peace, so
YABU: Yes apologise
YANBU: Do not apologise