I'm confused. Did people attack federal buildings or not? If they did, is it expected that local police should intervene? If local police should but didn't, is

I'm confused. Did people attack federal buildings or not? If they did, is it expected that local police should intervene? If local police should but didn't, is it lawful that federal agents moved in? There are streams of videos that showed there were two groups: those who held peaceful protest before 1:00am or so, and those who rioted after 1:00am. Are those video telling the truth? Or are they edited out to mislead us? When did the federal agents move in? Did DHS director tell the truth in DHS' public debriefing? Did the video about riots played by Kayleigh McEnany tell the truth? Or all I saw are a bunch of alt-right propaganda? Or violence is the voice of unheard so by asking these questions I'm a disgusting evil person? And no, those are not rhetorical questions. I honestly don't have answers. For one, the so-called "arson" in front of the courthouse looked so small. It looks just a bunch of people burning cardboard for fun or for protesting. Probably still illegal, but I wouldn't call it violent or arson.