Also be vocal, talk to people. There are three levels of government, most spend time point fingers to the other, show up to town hall meetings for your local municipality. Protest the cons whenever they are in your area. Also be wary of things like Rhetoric, question when people say simple quotes like "a rising tide raises all ships", "who is going to pay for it" and other bs, call people out on it. Also don't take situations for face value, for things like victim blaming when it comes to poverty and injustice, ask yourself "how did it come to this and how can we prevent it from happening again".

If you are a worker, organize with your coworkers.

You don't have to do all these things, but voting is just one (but an important one) of the many actions that are out there. Your can even do something as simple as start a Facebook group with your neighbors. Try to envision what a better world would be and push the needle towards that.