That my friend, is no reason to kill people... You would be attending hospital for those mental actions. On a serious note, its no reason to kill someone...
Everyone gets banned, there are no warnings. Thing is, even IF this was considered roleplay, which it might be, if you asked permission, maybe tried to ask to make it into a little event with admin permission.. You also did it in a greenzone.
Its just a shit excuse for RP and for you to kill a bunch of people. RP on this server should be fun and enjoyable for both sides, even when getting robbed. Killing someone while screaming happens on a daily basis in which we ban people for those actions.