Hello Ratnakar Kulkarni, thanks for the swift reply.  What about this, "He became a celebrated hero in Britain among most of the people connected to the British Raj,[3] but unpopular with most Members of Parliament[4]"
My reason for suggesting this is that 247 MPs voted to forcibly retire Dyer from duty with only 37 MPs voting to keep him.  Later, a Dyer supporter (Carson) attempted to pass a motion of mild approval of Dyer, but was defeated 230 MPs (against approval), 129 MPs (pro-mild approval).  This suggests that a majority of MPs was against Dyer.  All this is covered in the reference 4.  Please let me know what you think, I think adding what I suggest above would balance the introduction, yet keep it short.