They’re just going to say it was justified to kill all these people because Hamas fighters are in the vicinity. That person you are replying to doesn’t seem to understand that the presence of terrorists around people doesn’t excuse killing those people under any circumstance.

They will shift the blame away to Hamas. It’s like if you and your whole family were getting murdered by someone, then they yell, “Look at whst you made me do!” as they stab your wife.