I absolutely do know that these groups foment violence.  They showed up with weapons for their "summer of hate". They are interfering with the Democratic choices of a town to advance their hate filled and violent agenda. They are bigots and racists seeking to impose white supremacy. Remember Dylan Roof?  one of them.  It is false equivalence to say that the violence originated with the protesters. And yes, I am quite informed and have the experience of many decades.  You need to learn to differentiate good from evil and that this is not a matter of "free speech".  They should not be tolerated, they should be aggressively opposed as a blight and cancer on society. You are an apologist for them and therefore condone them.