Cool beans . Still doesn ' t mean he knows what he ' s talking about . Here ' sabstract 407735 the abstract from a study published in JAMA studying hand grenade injuries on civilians in refugee camps . Of 91 injuries surveyed for the study , 59 % of the wounds were small , affecting only soft tissue . Few wounds were associated with fractures and none with comminuted fractures . Twentyfour softtissue wounds were treated conservatively with minimal morbidity and no mortality . Conclusions . Missiles fragments or bullets from hand grenades tend to produce wounds with little tissue damage . Serious injury is due to penetration of vital structures . The results permit a recommendation that certain small and uncomplicated fragment wounds can be treated initially without surgery . JAMA . 1993270624626 A refugee camp full of civilians sounds like a pretty good analog for a protest camp . Also , lets not forget this study is dealing with military fragmentation grenades . Weapons specifically designed to maimkill . Sadly this abstract does not specify the proximity of the casualties to the blast nor if they discounted anyone killed outright by the initial blast . is a second case study out of South Africa VERY NSFW . It deals with a group of young boys killed by a UXO M 26 Frag grenade of South African origin . This will seem contradictory as there were several fatalities , but as you can see from the injury patterns , being in close enough proximity to the explosion to cause extensive limb damage would have more than likely been fatal due to overpressure on the vital organs . Being just 15 m from the epicentre resulted in only minor injuries . Also , why was none else injured in this blast ? Edit TLDR . Grenades don ' t just fuck up one arm