If not your position is illigical, atrocities like this always end up as a recruiting weapon for the very people that the perpretators are trying to get at. Perhaps you think the attack on Oradour-sur-Glane was objectively rational or Bloody Sunday (1920)  or Bloody Sunday (1972) or Frech atrocities during the Algerian War of Independence, all of which did the perpetrators no good whatsoever.