Like Leads To Like

I went to a fairly violent movie today, for reasons that are not clear to me.  The name of the movie does not matter, but one theme clearly expressed in the movie was that actions motivated by anger, judgment or ego lead to more of the same, while actions motivated by love and compassion also lead to more of the same.  This is a theme which is generally, but not always true in real life.  Personally, I have done each type of action many times in my life.  At this point, when I feel anger, judgment or any of various feelings prompted by self-centered ego, I do not act at all and simply let the feeling pass.