The youtube channel Time Ghost History has a series of videos called between two wars, about the turmoil in Europe that led up to the WWII. It is amazing. Basically every country, new or old, had to deal with the hatred between majority populations and minority populations, not just in the country but by region and city. Outside forces then manipulated them to create divisions where there might have only been minor differences.

There is a good chance shit's going to get very ugly, in very predictable and catastrophic ways.