Too often people want be correct at any cost. They have to be rewarded and acknowledged for it, so they do whatever it takes -- dragging others in the mud, being an ass, vindictive, or simply looking to embarrass, humiliate or annihilate the person wrong or in the "wrong."
Being and knowing your right or in the "right" should be enough. And if you really care about what's "right" and doing what is "right," you know that it often times takes a little nudge, convincing or enlightenment to get others to help you along the way.
If your first notion is to look for the worst in people, ask people to prove a negative, throw out extreme rhetoric (racist) that will only prove to be a sharp stick to those that could be won over, where's that getting you? Maybe you're right but how much solace do you take in that when the "right" things aren't getting done because of a toxic atmosphere that's now been created -- people don't want to come over to your side of the issue because words like racist won't soon be forgotten. Soon (and it's like this now politically) it's not a matter of doing the right thing but making sure the people you believe to have wronged you in the past don't have their way. Do you honestly think Republicans and Democrats won't do the same damn things they're doing now, just vice-versa if Republicans gain back control?
What's "right" is "right." But there's both a right and wrong way of getting the "right" things done. Being correct just isn't enough, it never has.