Careful who you judge. It might be you who is actually on trial. One sure way to learn about others is to let others think they stand above you, then see how they respond. The person you disagree with just might be doing just that—letting you think you're in charge and watching your reaction.
That might not be the case. You might actually be the decision-maker you think you are, until you're not. Even if you hold the power seat today, tomorrow the tables could turn, then your entire history coughs up testimony about who you were all along.