This is a superb movie that leaves a lasting impression. Very early on you realise that the authorities who are trying to bring down the drugs cartel (the good guys) are not good guys, they will go to any lengths. It is only later in the film that we realise Benicio Del Toro's character has a hidden agenda, to avenge the death of his family, and he carries out his plan with merciless efficiency .The final scene where the children's football game is interrupted by the sound of distant gunfire reminds us that this is a situation which will not end.