“Even if everyone is doing it, wrong is never right.”

I think this means that no matter what doing wrong will never be a good thing to do. Even if there are a lot of people doing the same wrong thing that will still never be the right thing to do.  Something is not going to right just because everyone is doing it when they all know that they are making the wrong decision. When you do the wrong thing it will never be the right thing. An example will be that evil, error and darkness will never be truth even if popular.