In my opinion straight up deleting accounts should be the last possible measure. This is supposed to be a free thinking place and people do disagree. With that said, If individuals are using their power and authority for ill will or just out of jealousy then other measures should be looked at first. What about boycotting them someway? What about some kind power down of their account that is voted by everyone who would like to contribute to the community? Maybe a probationary period. Then if this does not stop the biased behavior take more power from the individual like no voting on posts for so many hours. If we start to take away freedom then it can be taken from us, remember that!