We haven’t solved the problem of preventing sociopaths and psychopaths from becoming powerful yet, and it’s hard to believe that society will ever solve that problem, since sociopaths and psychopaths will always exist.
Yes, and it even works the other way around - we are choosing our leaders and we are choosing craziest ones. That is how group dynamic is working like, according to Bion:
And perhaps one of the most important findings in his experiments was that whenever a group is formed, it always seeks a leader to follow. The group then searches for someone who has questionable attributes with his or her mental health. Initially, the group will search for someone who is paranoid schizophrenic or someone who is malignant hysteric. If the group is unable to find someone with those attributes, the group looks for someone with delinquent trends and a psychopathic personality. Otherwise, the group would just settle on the verbally facile high-grade defective.
You might find his “Experiences in groups” quite interesting.