"murder does not justify more murder"
The murder which is happening is by a war. If you don't know that, you're living under a rock. And what I said, is that this war is justified. So yes, this is exactly what you said, you just deny it. War = murder. "Murder isn't justified" -> "war isn't justified". Very simple logic.
Whatever, I really don't care about what you think. You can blame it all on one side, ignoring the ruthlessness of the other on their enemies and even on their own citizens. Just ignore Hamas hiding guns in schools, ignore them firing rockets from public parks, ignore them targeting civilians (with no military infrastructure/personnel). Just ignore it all, and blame the jews for everything. Just like the 1930s. "War crimes" my ass. If you really cared about war crimes you would've complained to Hamas, not the IDF.