After watching this movie, the first lesson I learnt is that there’s nowhere without dark side, even through there is US, and 99% people are nice and innocent. The second lesson I learnt is that there is still some hope to accept and teach bad people how to be a nice people, even through to some extend they are evil totally. The third lesson I learnt is that maybe love can move everyone, even through the possibility is lower than what this film shows to us. But after all, it’s a good movie to record the most miserable tragedy happened in 2013, and also salute to those policemen who protect us from injury and darkness.