At the individual level. Why some people want it ? Why some people do it ? Would the people who suffered from it do the same if they held the other position ? Do you think that those "thinking ways" look like Racism ? Why Hitler was literally elected by the good people in Germany ? That the first "winners" (Nazis) were transformed into losers ? Why the same people now say that only Hitler was mentally ill ? Have you heard of the "Milgram Experiment" which was run in the middle of the "Allied Territory" ? Do you really think that the 21st century will be miraculously exempt of the things humans did in the last century (for example) ? Which side will you choose in the upcoming years ?