Its just people. People are the same everywhere, and are fundamentally unpredictable systems. How large groups behave does depends to a certain extent on context: by compared to others and your socio-economic situation. How they publicly expressed their values are entirely different from their behavior. This is to the dread of incumbent governments and pollsters. If you starve a wealthy man for 2 weeks he will be rea…
The examples you give come from environments which are likely to attract sociopaths. You yourself are with a higher probability a narcissist than the average human [1].
[1] https://scholarspace.manoa.hawaii.edu/items/96cff233-cefd-45...