The protestors the tweet was referring to:

cry more.
A few Nazis show up to a protest that has nothing to do with Nazism = all protestors are Nazis and the protests are a Nazi movement? LOL ok great deductions Sherlock.
No, what's happening here is a few idiots show up to a protest and Black Dog, who disagrees with the political message of the protests, uses this to smear all the protestors as Nazis as a lame attempt to delegitimize the protests so he doesn't have to actually engage with its actual content.
What a bunch of deceitful bad faith nonsense.