I have a kid with a peanut allergy and when peanuts started showing up all over the place outside, we asked our neighbors the same thing: please stop giving the squirrels peanuts. We couldn't let the kids go outside in their own backyard.
Thankfully, our neighbors are all generally really nice people and not child-murdering monsters, and actually stopped it.
People: Keep your peanuts to yourself and do not feed wildlife. Both of those things are common sense.