Why Indian force at manipur is so harshful to manipuri people?

every country has army with good and bad people,even India has good and bad people in there army too.it dose not mean that whole indian army hate them.about 99% of all India love maniur and its people and only 1%people from indian army hate them for there personal reason's.My dad is in Indian army and he is carnal he also visited maniur and said to me when he come back that *son if you want to visit heave on earth you have to go maniur*and i did.even i also gone there and its so cool place to visit.And maniuri students are my friends in university.If few apples are bad dose not mean whole tree is bad,sorry for my bad English.