The prerogative to define who is normal and who is insane belongs to the one in power.
In the past the definition of normal should have been: A person who work within the existing system to acquire power.
The definition of insanity would than become: A person not working for the system and without desire to acquire power.
With the coming of democracy the definition of who is normal need to be changed to: A person working within democracy to acquire power to help improve the lives of others. We see that now the emphasis is on helping others. This definition would undermine the whole idea of defining people as insane, since democracy is about helping others. If we decide anyway to define insanity it would be: A person not working within democracy and hurting others. The psychopath would than be labelled insane.