There might be clever ways to distribute the job of censor, e.g. have an initial cadre of trusted users and ban any newcomer that gets voted down too much by your trusted users. Someone gets added to the trusted users if the existing trusted users vote them up sufficiently. Or something like that. But I expect you would need someone to experiment with the site full time for a while (years?) before the mechanics could be sufficiently well worked out.
There might be clever ways to distribute the job of censor, e.g. have an initial cadre of trusted users and ban any newcomer that gets voted down too much by your trusted users. Someone gets added to the trusted users if the existing trusted users vote them up sufficiently. Or something like that. But I expect you would need someone to experiment with the site full time for a while (years?) before the mechanics could be sufficiently well worked out.