@Cyber Abyss,
Cyber Abyss wrote:No one is considering mass genocide. Just examining cultural and economic conflict in Europe.
Just making known the dangers of combining nationalistic thoughts of "social harmony" with ideas of state socialism.
Remember that government works through violence, state socialism carries with it ideas that the people are entitled to certain provisions from the state, and nationalism separates between who is deserving and who is not.
So for every benefit government can possibly confer, it does so through violence. If you wish to secure "social harmony" of any nature through the state, it is done through aggression against those without harmonious beliefs. Hitler may be an extreme, but he is exemplary.
If freedom and "social harmony" are ever in conflict, I have no doubt that your harmony is evil.
EDIT: Note that if you are secure in the harmonious principles, education is the trick (and the state sucks at that too).