This is another political football; just like Russia is. Internal factors of the US should not be damaging to the overall picture.
I'd think Krauthammer, Rubio, etc. are being political opportunists.
This whole event in Virginia though, has caused a big uproar in the country, in parts at least, I think one can sense that.
In general, the right that was in Chancellorsville, people like Spencer, the Klan, should all be rejected to the utmost degree. This doesn't change the fact, that the whole hostile environment was caused by a number of factors, including possibly, public officials not doing their job.