Dialecticism. For every "X" there is a "Not X." If you can identify the opposing sides, drive them farther and farther apart until there is no reconciling them any longer, the result will be a violent combining of the two extremes which obliterates both of them and gives rise to something new.
In Hegelian terms, Thesis gives rise to Antithesis, and when the two meet, Synthesis results.
Dialecticism is part of all historical dynamics. It can arise naturally as societies evolve, or it can be created, coerced, or imposed artificially.
In their rush to redefine the world after their own image, today's socialists are forcing dialectical splits wherever they see "fault lines:" race, age, sexual orientation, fiscal responsibility, sex ... You name it.
And it's working. The sides are being forced farther and farther apart until they have little in common any longer. Have you tried talking to a liberal recently? You might as well be talking calculus with a snapping turtle.
Absolutely.