Do you believe unpopularity is a valid reason to remove someone from a community?

As an anarchist, I believe all relationships should occur by consent of all involved parties; one should not be compelled to associate with anyone against one’s will. But at the same time, we have a parallel obligation to create space for dissent, even and especially by those whom we despise the most.

Do you believe a person who is sufficiently unpopular should be compelled to leave a community? For instance, to use this forum as an example, if a supermajority of users on Fluther find someone’s presence odious and unpleasant, should that person be removed from Fluther? Consider that a sufficiently unlikeable person will act like a lightning rod for negativity, eventually attracting an anti-fan club which will follow this person around and vent non-stop hostility, affecting the mood of the forum as a whole. If undesirable elements are not removed, how does a community prevent itself from turning into a battleground wasteland?