Some historians have claimed Statement there were sectarian motives ; others claim Statement that those killed were targeted Aiming only because they were suspected Suspicion of having been informers during the Anglo-Irish War Hostile_encounter , and argue Protest that the dead were associated Collaboration with the so-called `` Murragh Loyalist Action Group '' , and that their names may have appeared in captured British military intelligence files which listed Writing `` helpful citizens '' during the Anglo-Irish War Hostile_encounter ( 1919–1921 ) ,