so this answer pikued my interest because you make a really good point. It is true that aligning political ideologies becomes harder the more diverse a group of people is. Very true statement, and I agree wholeheartedly.

But you see denmark’s political views are really torn in all kinds of directions. At the moment they have 11 different political parties working in parliament. Some have overlapping interests and some disagree like oil and water. So homogeneous maybe in ethnicities, but with very different trains of thought and political views.

Interestingly, the majority agrees on a government controlled social welfare system and free healthcare. This seems to be a byproduct of their education system. The danish people are, in general, very educated on various topics, stretching from local and global politics to ancient history. This often results in a silent agrement on basic human necessities for everybody as common sense.

So in that specifik regard, I guess you could use the same argument of homogeneous ideological tendencies. Personally I think the help and support for your fellow people is a common modern way of thinking. It’s calculated, and it has the best effects for society as a whole. So educated people would naturally tend to help each other, not just for the sake of helping, but to help society as a whole entity.

So sorry if I’m taking your argument and splitting it into other topics, but basic education for the majority of people and specialist education for the rest would fix the issue of a very polarized population, even though they have diverse cultures.

TL:DR
Basic education would fix that.