I still remember one of my first managers that seemed like a nice person who went absolutely psychopathic during 1-on-1 when nobody else was in the office that

I still remember one of my first managers that seemed like a nice person who went absolutely psychopathic during 1-on-1 when nobody else was in the office that day, attempting to completely destroy me, perked with wonderful statements like "your performance doesn't matter for your career progression", "you can't do anything about it", "I can do whatever I want to you", "it's for the company (i.e. him = company)". All after I solved their main problems within my first few months and laid groundwork for their next successful product. Later I learned there was some internal clique of people pushing each other forward and I was considered a threat - at that time I was pretty naïve, one could tell idealistic after achieving academic excellence at top schools, believing in "innate goodness" of people (LOL). Now that person is a senior director at Google. Good luck to anyone affected! I am still thinking I should have destroyed him back then and stop the tumor right in the beginning...