Warning: POTENTIAL SPOILERS!
So, early in the film when the son kills one of the henchmen he notices a tatoo. At the end he sees the same tatoo on the boss (sorry, not recalling names). It is obvious that he thinks this boss betrayed him, but wouldn't that mean that the boss basically gave him one of his own henchmen to kill? I didn't quite get the significance of this...maybe it was nothing. Thanks!