constitution is amended with a different vision of arms bearing. so after the civil war the national rifle association is founded. it is a group of exunion should be and they believe you should have a gun in your home for your own direction. the educational background one. >> so then bring us to the 1970s and what happened? >> in the 1960s and 70s liberalinliberals say we want the right of criminal defendants. this is the war in court revolution and start to more vigorously start these civil liberties and say wait a minute.