Honestly I’ve never seen anything like this.
Unfortunately some entertainment script writers have already incorporated this type of execution into a few TV shows. A busy street, lots of people around, no one would take note of a gunman walking up to his target and shooting two or three times using a wheel gun, and then briskly walking away. It would take several seconds for a casual observer to clearly understand what has happened and even longer to think to call 9-1-1.
Considering the simplicity of this kind of hit, I wonder why the left has not incorporated these actions into their political action plans.