local demoteclasses = {TEAM_MAYOR, TEAM_MOBBOSS, TEAM_CHIEF}

function demotePlayer( ply )
    if table.HasValue(demoteclasses, ply:Team()) then
	    ply:ChangeTeam(TEAM_CITIZEN, true)
	    ply:PrintMessage(HUD_PRINTTALK, "You have been demoted because somebody has killed you!")
	    for k, v in pairs(player.GetAll()) do
	        v:PrintMessage(HUD_PRINTTALK, ply:Name() .. " has been demoted, he was murdered!")
		end
    end
end
hook.Add("PlayerDeath", "demotePlayer", demotePlayer)