Wait, so "the militarization of police" is a self-evident "bad thing", but....deploying the ACTUAL military would be just fine?
Also, when it comes to crowd control, while everyone may be outraged at the use of tear gas, rubber bullets, and riot squads with hard hats, batons and shields, at least those are less-than-lethal use of force options. The military does not (I would think) have that equipment or training on it. The only thing some jumpy, nervous private has to respond with to any perceived threat or provocation is his rifle.
Now, if you believe that the National Guard will be better behaved to prevent any use of force being used from this point on , so be it, but it's just another angle to consider.