You twist the point in purpose in order to deceipt. You know that a Jew would never shoot against an IDF soldier. When IDF soliders are sent against settler Jews the maximum you get are spits, kicking and shouting. However, there are good basis to believe that palestinians would use weapons against soldiers. This fear is the cause of this tragedy, which is indeed a tragedy that should not have happened.
Police arrest 18-year-old Palestinian suspected in Old City stabbing (Haaretz)
from the article: Orders were to capture militants alive - so why were they killed?