The differences:
a) The IRA did not send a large group of terrorists into England to (rape and) murder over 1200 people in the space of a few hours
b) The IRA did not abduct over 250 people, including children and the very elderly
c) The IRA did not form the government of Ireland.
But of course if you don’t think what I said is true, that means you think that Hamas could commit their acts of rape, mass murder and abduction with impunity, in the belief that Israel could not reasonably respond militarily because civilians would necessarily be involved. How contemptible would that make Hamas?