Killed by whom?

CBC often writes about the "dead" go Gaza, and how many have been killed, but usually avoids adding "by the Israelis". 

But when one Israeli is killed by a Hamas toy rocket, not only is it worthy of a headline, but CBC never fails to add "killed by Hamas".

Can it be an accident that CBC so carefully avoids the phrase "killed by Israel", but when Israelis are killed CBC always must clearly state who the killers are?