> You may still disagree, but even the tinest expansion of view is a victory for you both. Even the briefest glimse of otherness, a win.

But this view is also a win for "them". A society that cannot look to itself, see its failings and divisions and address them and move past them is doomed to stagnation and failure.

The thing about divide and conqour strategies, is they don't create the divisions out of nothing. They exploit what is already there. Suppressing the divisions without resolving them is like surpressing an emotion. Eventually the pressure builds until there is an explosion. It is as much a losing strategy as letting differences spiral into animosisty and hatred.

Sucessful strategies (such as stoking division) usually don't have an easy answer of what you can just do to defeat the strategy. If they did, people wouldn't have been using such strategies for thousands of years; People use them because they are hard to counter.