Its both.
Antifa were agent provacateurs. The dems and reps knew about it. They tried to make it look unoptical (breaking shit, spitting at cops). Give the media their photo ops. Probably failed in their attempt to start a riot. It wasn't.
And at the same time…
Regular Trump supporters who just wanted to occupy the back of the capital. Yes the BACK of the capital. The BACK of the capital is where the hundreds of thousands of rally goers were. They had no clue really about the media's photo ops inside the capital or the front at all.
Both are true at the same time.