People who are being disrespectful are people that were not properly brought up to be good human beings. I would say you should continue to ignore those kind of people and try not to let what they say get to you, because such people dont have control of who they are and would always show you the kind of character they are made of. Its better not to waste an ounce of energy or emotion on such people.
RE: Challenging myself to be less vengeful and reactive when insulted in debates and such.