So taking a weapon off a dying person (presumably to help the dying person, which medics tend to do) and giving it to someone nearby for safe keeping makes you a fighter now? Hell the medic might have given the weapon to the hamas fighter to protect him doing his (geneva-convention protected) job while the oh-so-moral IDF was firing at them.
But of course, this one video totally warrants the destruction of several hospitals and the torture and murder of doctors and patients. What a bullshit argument.