I think ACLU are severely misguided, if not acting dangerously in their active support of a CLIENT rather than a CAUSE, and thus actively supporting and encouraging proprietors of hate speech.
Those who are already clicking on "reply" ready quote Niemöller's poem back to me should expect to be quoted Popper back, and be reminded that those that came for Niemöller are the same ones they wish to protect, and that those assholes wouldn't lift a finger to help you back: they'd rather punch you. It's not a bad idea to punch them back and remind them that they have no place in society, and should crawl back to whatever beerhall they crawled out from.