I don't think it is beneficial to the moral standing of the movement, or the party. I'm not saying it matters in a moral sense, but in a political sense it certainly does. Libertarians are unified under the belief that violence shouldn't be used to impose will, but that doesn't mean that a social order isn't essential to a society. We should still have negative opinions, and not vote for people who host disturbing ideologies, and we should especially recognize them as a detriment to a political movement. Classiness always wins.