Hitler's regime was socially far-right but fairly left economically. But regardless, it was very much so a right-wing authoritarian, single-party dictatorship.
Another dynasty freedom was never allowed
I think it is maybe priests
It depends on who it is between. They can create terrible relations between other political parties by slandering, by being disrespectful, by being hateful, etc. They can also create terrible relations between common people by demonizing the other political parties, by lieing, by using hate, etc.