We're talking about the history of the conflict which I think is important. The Israeli disengagement from Gaza in 2005 is part of how we got here so I think it's important for people following the conflict to know the details and not just respond emotionally to the terrible images of war- which I agree are disturbing.
While Israel supposedly disengaged from Gaza, it had conducted similar attacks with hundreds of human casualties under the pretense of operational readiness, training, and the notorious mowing the lawn operations. Of course some of them were so called retribution and responses, which mostly begins by rockets on Israel soil, but not by the brutal oppression it administers to Gazans.