A Banishing is needed

There is a meme inside my office building...a spirit if you must call it that.
It is a spirit of "everyone else is so dumb, and I am the only intelligent one"
It seems to grip hold of the new folk (and staff rotation is high!)
Perhaps a banishing is needed?

Can you ethically perform a banishing without the knowledge of your coworkers?
Hmmm....ethics to ponder