Someone, anyone- PLEASE help me understand

How.
  1. How do you justify using the threat of a corrupt government as a right to sell guns to literally anyone
  2. While simultaneously
  3. Remaining indifferent at the loss of life of your fellow man
  4. At the hands of corrupt people in a system built against almost every victim
  5. How do these mindsets exists in the same mind????
  6. Somebody please tell me. I gotta know.