Ban the moderators but not the subs? Is this some sort of trick physics question? It seems to me to be possible to have this sort of feature in software... it

Ban the moderators but not the subs? Is this some sort of trick physics question? It seems to me to be possible to have this sort of feature in software... it's like a channel in IRC with out an op. Also, how is what the mods were doing not a speech issue? If crimes were committed surely reddit was not negligent in reporting these to authorities?