It’s, to coin a term (/sarc), Identity Politics.
The problem is that divide and conquor relies on the “conquor” part being feasible. I don’t think it is: I think that the forces involved are too large and when set loose will be unmanageable and will turn on one another. The result is (to coin another term /sarc) Balkanization.
The left’s intent is to destroy the US while looking innocent. They honestly dont believe they will suffer any consequences.