My game friends (all Flips) and I have been talking about it. As for me, there are plausible options:
1) He was targeted by a disgruntled Dem or Rep, which is a stupid move, given that he only increased sympathy for him.
2) He was targeted purposefully to punch his numbers even higher, which is a smart move.
The gun used might be a small caliber, and he was shot at from a distance, hence the 'grazing'. If it's a disgruntled Dem or Rep, the shooter's an amateur.
Otherwise, the gun and the subsequent grazing is proof that it was staged. I mean, if you really intend to kill someone, you'd have to make sure you hit him.
I imagine what happened was either:
A) the shooter was simply not very good and had a poor handle on his weapon
B) Trump was moving too much for the shooter to properly aim at the distance
C) the gun chosen wasnt ideal for such a shot
We'll see as more details become apparent
^ if so, then it's more likely that it really is a Fico-inspired assassination attempt. Left-wingers trying to act heroes, making things worse for them.