control every door and gate in the prison, and an enclosed dog run where a canine corps patrols the perfeimeter4/7. but a collection of confiscated shanks to rival any american prison proves there is little to stop inmates determined to commit violence. >> there is a greater risk of violence here, more than in a other prisons because this population, all in one way or another, has blood on their hands from outside. >> translator: i think if you are trying to pick an average, there is a fight every week. in most instances they do use some kind of object. it is either a shiv or some times a shaving razor. >> but there is another factor at rimonim that keeps staff on constant alert. a violent inmate population mixed with political and religious tensions of the middle east makes for a potentially incendiary combination. >> translator: a few years ago there was an event when a motorcyclist threw a grenade in the direction of one of the guard towers. we found out one of the inmates wasn't happy with the treatment he was receiving so he gave the order to one of his henchmen to throw the grenade. >> tr