Yeah, I've just learned that when kids are around to choke up on the lead and be hyper-vigilant. I've been lucky to have dogs that just melt around kids BUT seeing as how kids are so unpredictable I hedge my bets and keep tight control of my mutts.
A friends kid wanted to walk Banjo once upon a time. I told the kid no, nononono. NO. Kid kept on and kept on. Pretty annoying. So I told kids mom that I was preparing to teach her kid a lesson. She asked what and I explained. She was okay with it. So I explained leash reactivity(which Banjo had none of, he was a saint on lead). I explained how a 90 pound GSD was more powerful than any 8 year old on the planet. I explained how other dogs could react and made sure the lesson sank in. Kid still wanted to "walk" Banjo. So I harnessed him up, slapped the leash on and handed it to the kid. Being the wunderkind leash dog the kid had no issues UNTIL I called Banjo to me. A quick trip to meet Mr. Ground and a few feet of dragging drove home my power point very well. The child quit insisting on walkies. I was a bit of a jerk there, but I did imprint upon the child that big dogs can hurt you even if they don't mean too and to listen to big dogs owners when they lay down rules.
Never cook bacon while naked.