A more just, peaceful and opportune world won't be attained through the use of guilt-by-association tactics. It's ill-advised to convert otherwise totally-understandable anger against credible perceived existential threats into the targeting of any non-agreeing entity. History shows that the only possible outcome to this is that, in scaring onlookers about the turmoil in their community, it hand-delivers the justification for the boycott's censure to the government on a silver platter. This doesn't mean that the onlookers are always morally correct or never complicit, but they are always useful for invoking 'security measures'..
Not to mention that you're also more likely to (all in the name of defense against the Daily Stormer) unwittingly target a group also targeted by the Daily Stormer if mere non-action justifies retaliation, because of the Daily Stormer's lack in number compared to the breadth in scope of conditions of the boycott, all applied at a popular level.
If you want to make someone fail in public, actively give them a pedestal so they might do it in front of an audience. The side effects of devoting so much to the excision of such a small cohort comes at a bigger cost to the bigger party - unrelenting pursuit of a couple guerrillas is ruinous.