>> "Real" soldiers do sometimes use weapon-mounted optics for observation and target ID. They don't always end up shooting the people they're looking at.
I've yet to hear a vet tell me that's an acceptable crowd control tactic. Not everything the military does is crowd control, and when they engage in crowd control they don't use all of the tactics that an infantryman at the front lines might use.
To put into less hyperbolic context : when a 'target' is standing seven feet from you, you shouldn't need to aim a sniper rifle at them to identify them through its' optics.
A police sniper with a magnified scope isn't there to provide "crowd control" in the sense that you're describing, i.e., getting up close and personal with a crowd. They'd be providing overwatch from a distance.
That said, using binoculars would convey a much less threatening impression than observing through a weapon-mounted scope. On the other hand, we don't know exactly what the tactical situation was when that sniper was aiming at the crowd. Unless you do, you're not in a position to say whether he should have been aiming at people or not.
I've yet to hear a vet tell me that's an acceptable crowd control tactic. Not everything the military does is crowd control, and when they engage in crowd control they don't use all of the tactics that an infantryman at the front lines might use.
To put into less hyperbolic context : when a 'target' is standing seven feet from you, you shouldn't need to aim a sniper rifle at them to identify them through its' optics.