How not to be angry?

I get angry with a lot of people around.Whom does that affect>?That anger ,,just the anger ! well..If i don't express to the person that they are causing me the anger, then the anger is most likely going to affect me in a negative manner.
I figured out how to not be angry..I could even before the anger reaches the brim, start expressing my displeasure to this person that is causing the anger.
Well! That is only possible if a specific person is causing me specific displeasure.What if i am getting angry at the shallowness and stupidity of people on TV ..what is the solution..Either write a blog about it or write to the tv producers and if any of that is not possible..be smart enough to not let all of that affect me..I guess that last mentioned method is the method most people adopt to be so desensitized with things that they can go by each day without getting angry or affected by anything unless it is directly affecting them in some way.They don't care if someone litters the place, they don't care if illegals start gang bangings groups in the US, they don't care if people are getting stupider by the day in the US, they don't care if all that is there on TV is some trash gossip about some stupid actors in the entertainment industry.
Gosh ! Why do i care so much?LOL