It certainly seems to be that way, as the individual who lost his life supported Trump.
I don't feel like digging through my history to find it again, but there was a reddit post from one of his family members questioning how to continue living in this kind of political turmoil.
And I managed to find it again, conveniently it seems that the reddit moderators purged it.
The guy was there to support police. He had nothing evident that he was pro-Trump. Just because he was pro-Trump based on after the fact information, doesn’t mean his demise was due to it. And looking at the pictures, though I’m not certain, it looks like the deceased was the one who started the violence, and Darwin caught up with him.