You don't need mis-aligned AI to program a drone to fly to a specific address, loiter, and then dive bomb the first person whose face matches a predetermined photo. This was doable in principle with tech from four years ago. What's changed since four years ago is that you can run the facial recognition and visual navigation algorithms in a cheap onboard chip on a drone.
EDIT: Russia is already doing this, per an NYT article from a few days ago, though they're targeting infrastructure (find the first kerosene tank and fly into it) rather than specific people.
EDIT: Russia is already doing this, per an NYT article from a few days ago, though they're targeting infrastructure (find the first kerosene tank and fly into it) rather than specific people.