Content warnings serve a purpose. Yes, that includes politics.
You may feel that a topic is too important to “hide” it. But please understand that people are currently getting bombarded by horrible politics news from all directions. This is not sustainable, and it’s often a choice between muting this at least temporarily or burning out.
So: please don’t be an asshole and use content warnings. Get down from your privileged horse. People ask for them for a reason, not to annoy you or to downplay the importance.
(I fully acknowledge that I don’t always think about this. But I try.)