Is discipline in force just to salute their seniors???????????

Today I had to attend my Chinese class so I hurried to the college. My petrol tank was empty so I had to go to near by petrol pump to fill up my tank so I changed my daily route to my college from nec Dubakot to Madyapur Thimi. But on the way the troop of the armed police force were on their daily exercise so I was driving slow but some of the constable running back of the line signaled me to proceed forward but due to fog. I couldn't see far away, so I drove front but found that the other troop  was coming from front so I again slowed down in the blank place in between two troops but a constable who was running back suddenly spoke a very bad word to me it was not my mistake that I drove in their between I was granted permission to drive forward so without any cause he spoke that word I want to ask one thing that is discipline in them is only to salute their high level staffs or being in the post. They are fed by the tax paid by us to the government and is there humanity in them or not if by chance suppose there was a high level staff he could have been fired from the job or he had to face a  interrogation. But I am not a high level staff neither I am a government staff to cross question him so I drove away from there. So I want to ask that what is humanity and is the road on which he runs is his fathers land and is that his dowry to speak such words to me?????????????????