You have to help yourself before you can help someone else. Yes, being intentionally uninformed is bad, but reading/listening to nothing but doom and gloom will do nothing for anyone. Plus, by and large, you probably can't do a whole lot about those situations you mentioned.

Become more engaged in local politics, watch/attend your town hall meetings, get to know your neighbors, give a dollar to the beggar on the street, volunteer in your community, go out in nature.

Modern activism demands that everyone is knowledgeable and actively fighting everything wrong in the entire world all of the time. And that's just not sustainable. Take a step back, catch your breath, and trust that others will keep up the yelling until you get back.