it seems the whole family was plotting on bruno after carlo died and atlantic city becoming the east coast vegas. guess he didnt see the writting on the wall. but at the same time he make tony bannassa his consig and the the guy kills him thats some treachery shit. the boss makes you almost a equal to him and you kill him. dog eat dog world. its like at work when someone tells on you to the boss and you almost get fired. actually not alike cause they killed there boss