Friday survey. Most contenious topic?

[kiaa]

Hey, let's try something different for Friday off-topic. Can you tell me which, in your opinion, is the most contenious topic in politics? The one that stirs the pot the most, and inevitably leads to a huge shitstorm whenever it's raised?

Is it the Covid measures? Or class warfare? Welfare? Abortion? Religion and atheism? The war on drugs? The war on terror? Gun control? Socialism vs libertarianism vs any other ism? Total surveillance? Climate change? Budget and taxes? Race issues? Gender issues? Health care? Israel and Palestine? What is?