I got bit once while riding years ago. I now have a small tube of pepper spray velcroed to the tube for dogs in town and a 9mm Glock zip-tied just below the handle bars for the dogs (whatever else) outside of town. Both are better than a camera, and I used the pepper spray once in front of the dog’s owner. Worked like a charm. I had expected the cops to stop me but I never heard anything and that dog has never come after me again. But I didn't say anything outloud. It's only an issue if you make it an issue. Go about your way and just quietly do what you have to do, and keep rolling.
Fix the issue before you record it. Just my .02.