If someone has a gun and is trying to kill you, it would be reasonable to shoot back with your own gun.
The Dalai Lama (b. 1935) Tibetan Buddhist spiritual leader [The 14th Dalai Lama; a/k/a Lhama Thondup / Lhama Dhondrub; b. Tenzin Gyatso]
“Educating Heart Summit,” Portland, OR, asked by a girl about school shootings (15 May 2001)
SeattleTimes