Alan Moore was trying to make some political statements here, but it's nothing we haven't heard before, albeit not in a Cape Opera.
The actions that one side sees as correct, the other side as incorrect. Funny thing he, they are both describing the same actions. The actions don't change, just the understanding of their consequences. An action cannot be both right and wrong. One side is correct, and judgment is not just some arbitrary feeling people have.
Learn about history, learn about politics, learn about economics. Don't just be an ignoramus of your world spouting the excuse, "I'll just leave it to men smarter than me." Because I've got news for you. These men that you deem smarter have just as much access to information as you do. And yet they are still not finding correct solutions.
There are certain actions that people are advocating these days that are wrong. Actions that have bad consequences, actions that historically, logically, and inevitably lead to human plight and suffering. Take a stand in your world. You live in it! Love it! Defend it! Just don't let it go to shit! And if it's gonna go to shit anyway, then at least you can die with a clear conscious knowing you tried.