Why so much division?

In class earlier today we discuss the term "mulatto" and whether or not it is a racial slur.My answer is yes it is a slur and I find it very disrespectful.I see no need for this term to even be in existence I feel that it should simply be biracial or mixed.Why must we always find a way to insult each other? If we spent as much time helping and healing each other as we do trying to find the negatives in each other or someway to persecute each other we wouldn't have half the problems we have and the world would be a better place.All of this prejudice and judgement,how soon we all forget that we are ALL human beings.We need more love and less division the same can be said of the Christian church.The world looks at us and laughs because we have all these denominations.....what's the point of dividing them if you need them all?!!!!! you need to be an APOSTLE and tell people about the love of Christ...you need to remember the PENTECOST and the promise of the Holy Spirit.....you need to be BAPTIZED and reborn of the water and the spirit.....You need a METHOD by which to carry these things out...GEESH!!!! IF YOU NEED IT ALL ANYWAYS WHY THE DIVISION? Men and women can accomplish the same goals if driven enough.....it's not about gender it's about DETERMINATION how bad do you want it? If you can push yourself it's yours!!! The division I see amongst people only confirms what I already know...........................................................The Lord is soon to come!!!!!