I think having empathy for those directly around you is a good start. The saying "all politics are local" goes the other way around as well, that most change is local change. It is unlikely that I can help people gain asylum from oppressive regimes, but it is very likely that my donations to local charities and volunteer work is directly helping those around me. In a categorical imperative sense, if more people acted this way fewer things would be so bad about the world.