I'd probably freak out if some random stranger tried to give my dog a treat, but calling the cops and making false reports about threats like that is so far over the top of anything he did that could be construed as wrong.
Like Heis said, he probably deals with all of this bullshit on a frequent basis.
excrement that also happens on a frequent basis: this woman being a racist queynte. That's not behavior someone just decides to pull off one random time.