You have been presented with multiple instances that directly contradict that statement. And have consistently managed to adjust the parameters, redefine the issue, or willfully ignore (relatively) unbiased data in order to advance a point that you have completely failed to support with any evidence other than the highly biased opinion based arguments of a small # of Youtube personalities.
While you may feel that this is a "straw man" argument or an "ad hominen" attack on these individuals, I would counter that they are making serious and at this point minority claims. That places a great burden on them to demonstrate a variety of lines of evidence to support and validate their arguments. This is just basic to any realm of serious debate and exchange of ideas. I am tired of everyone simply ignoring that in order to appear "balanced" or "unbiased" we are willing to accept perspectives and opinions from almost any corner as being of equal validity and worthy of equivalent consideration.
https://www.washingtonexaminer.com/d...mind-on-antifa
That is the only concrete evidence I can find of Democratic politician indicating support for Antifa, who you have set up as your primary leftist boogeyman. Shortly after Ellison did these, he was roundly criticized and condemned by individuals from all points on the political compass.
If you are interested here is a brief outline of how Antifa' s policies and goals are often in direct opposition to those of the Democratic part - https://www.quora.com/Is-Antifa-allied-with-Democrats
But if you still want to make the linkage between the two (Antifa and the Dems) then we can examine the other side of the coin. Far right white nationalist groups and the GOP. Here is a recent article that highlights how openly Nazi and white power candidates are running under the GOP banner -- https://www.vox.com/2018/7/9/1752586...olina-virginia
Every piece of evidence that I can find that attempts to see both sides of spectrum through the same analytical prism concludes that extremist viewpoints that spark violence is not solely a left or right problem, but something to be excised from the entire political spectrum.