Not difficult, the dimwits you are elevating showed up ready to fight the groups on the right who were there prepared to fight them. In the President's explanation, both are to blame, or,as I narrated it, another Saturday afternoon brawl
But it was the "unite the right" groups who made it all possible, they set the stage, they marched the night before chanting racial slogans, they orchestrated events, and the Presidemt, as the leader of the Nation, to just dismiss it all as a Saturday afternoon brawl legitimizes their efforts. Why do up think the leaders of those groups thanked him afterwards
And what makes it even worse was the President reaching for an explanation claiming there were a lot of nice people there just demonstrating for what they believed in, nice people don't stage Third Reich looking marches echoing old hate slogans