Shameful behavior is indeed shameful, but that doesn't mean becoming a lightning rod for controversy where the Lord and His Apostles said to sow peace in the public square. And actions can have consequences, but that's not for us Christians to necessarily take in hand as some sort of spiritualized vigilantes.
Well, if Jesus and His earliest disciples weren't going around talking "smack" in a neo-nazified way, then I'd think that the most abrasive example would be that of St. Paul preaching to the Greeks atop Mars Hill. And as far as I can tell exegetically, his message wasn't very acerbic.
In fact, if anything, it was essentially irenic, with a small splash of a call to repentance made via a rational appeal to his audience.
So, while I'm all for being allocated as a socially incorrect voice among the masses---and I assure you I am---I'm still going to go with Jesus' command to be shrewd and mindful of Paul's admonition to the churches to be wise in how we talk to those still remaining outside of the Church.