Liked the article and I agree ANY rally by the white nazi racists (not gonna use white supremist) must have a loud counter protest. The sticking point is NO violence. It is possible to push back and not physically attach them. All the people Kessler and his ilk detest should show up with their banners and counter ideals, signs and derisive slogans. Just do not engage them on a physical level.
What would be nice is if WA DC sees fit to give the final go ahead there be restrictions. No weapons of any kind, One banner but NO flags on poles. Carry all the flags you want but no poles. No bats, no torches, no guns, swords, machetes, knives, shives, chains - you get the point. Have your rally and those are the conditions.
Same for the protesters.
If my link above is the right link that the poster intended then let it be known that I do not favor anything that is racist or alt right white supremacist rantings. Many people ask me how I will feel when the white people are a minority. The answer is that I will feel much the same way as I feel now.