At 14. Arguing with a police officer?

Why would the young lady make the almost instant decision to argue with a police officer, especially at age 14?  These young people are being prompted or conditioned ahead of time to react without reason in case they are ever approached by law enforcement.  These officers didn't show up just to see how many they could shoot, they came because they were called.  Come on parents and Community leaders, lets put things into perspective.  Let reason prevail.................................marge