Workers get the managers they deserve. Having been witness to highly educated (à la French business school) managers being cut to shreds by typically frank Aussies, I repeat my point.
That usually only works if you are acting in unison with all your fellow employees and preferably with a union behind you.
Alternatively you can only take such action on your own if you wanted to leave the company anyway and are happy to depart in a final blaze of glory. It also helps to have lined up a job with a new employer first so that any references from your old employer will have been written and taken up before you chose to defy your superiors.