Somewhere i had read that it is human to quarell..If u leave even two brothers in a room they are sure to fight...Upper caste people kept torturing dalits for many centuries nd when Indian constitution provided them resrevation suddenly everything took u turn...The people who use to polish the shoes of upper castes were now their peers...Change was too severe for evryone to accept... the migratnts from UP,Bihar r facing a similar situation...most of the migrants were poor nd were acceptable to thier Maharastrinas boss...but with the time these migrants started catchig up with their marathi counterparts...then the real race began ...they were now elected as MLAs nd MPs nd started to be a strong contender to Marathis..How can ny boss be comfortable to be at equal footings with thier slaves? Protest was natural...n number of reasons were floated to justify thier strife against these migrants like spoiling the culture,polluting the city,son of the soils theory etc etc ...may be some of these theory were justified but main reason was slave nd boss sharing tea on same table...it wil take human civilisation to get accustomed to these things...until then such regionalism would keep erupting nd making headlines