It kind of makes you reflect. I actually like when a movie does that.
I know that that is the point of a movie, the intentions of the director and actors.
But, nowadays, it doesn't happen much; and when it does... Oh - My - God.
Anyway, it has its not-so-nice part. I mean, you don't feel completely comfortable doing the things you usually do; like you should do something with the reflection.
And sometime, what you feel uncomfortable with, has nothing, absolutely nothing to do with the message given by the movie you just watched.
Conclusión, me siento parte de algo masivo.