Israel likes to argue that Hamas embeds fighters with first responders, which even if so, they're still responding to injured. But Israel considers this not even collateral damage but justified.

Mind you Israel is currently funding a lobbyist organization in the UK to flag Médecins Sans Frontières (Doctors Without Borders) as a terrorist group (because many years ago a couple of people who had affiliations with other anti-Israel groups were found to be also affiliated with MSF).