Subtle Hate between ourselves

Logging on Reddit everyday,it feels like everyone is trying to show their superiority over others. My feed is bombarded with individual state subs spewing subtle hate against each other. Saw some posts related to release of the new movie, and subs were straight away dismissing our history. Yes, history is neither white nor black but a shade of grey (in context of morals), but what's with this sudden commotion of dismissing others history. When are we going to stop fighting among ourselves and degrading each other? मराठी माणूस कन्नड, गुजराती, बिहारींना शिव्या घालतो, आणि ते आपल्याला शिव्या घालतात. हेच चालत आला आहे. No unity amongst ourselves. When will we start celebrating each other's achievements as an Indian? Seeing all this subtle hate within the country, I don't see any significant progress being made in the near future. We are stuck with our past achievements, and are too blind to see past the ethnicity.