Why do people continue to knock others down to lift themselves up?!?

There is something that REALLY gets under my skin so i decided to voice my opinion on the subject,but i will keep it brief. So as African Americans we STILL haven't entered a place in our lives where we can support and lift each other up. I can't understand the reason why the Lee's, Spike and Malcolm, feel they are so high on a pedestal that they can knock other blacks down just for trying to build their dreams. Everyone has a different way of looking at life, i can guarantee my perception of you is not how you perceive yourself. Just because he feels others are not making the kind of movies he would or going about making movies the way he would gives him the right to criticize them? I don't want to make a huge fuss about it, but why not support and help each other succeed? There are so many great thing that can be accomplished in your life if you just let go of all the hate in your heart and just help the next man, especially when the height of your career is over just to stay relevant. There is enough room at the top for you all. Maybe it's because Spike is kinda falling off the scene,i don't know, but i truly can't understand how we got to this unforsaken place we are today...