The minigun is horrible, anyway. A shotgun did the trick for me. You can also try damaging it by blowing uo vehicles near it, or by using the frag grenades you can find in the trash at the entrance to Sanctuary Hills.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.