Did I ever said that making fun of MQM is racial slur? Racial slur is when making fun of someone features and race or using that to abuse and accuse others. Have you ever seen my post calling Nawaz and accusing him of being Punjabi (well, actually I could not have done that anyhow as what I know, he is not Punjabi, but Muhajir from India … :)]
For me, human is a human, whatever he looks like or wherever he belongs to. I look at human in same way regardless of that person ethnicity, religion, race, culture or whatever. If my brother would do something wrong, I would say that regardless of him being my brother.