Must read Luke 22
“But now if you have a purse, take it, and also a bag; and if you don't have a sword, sell your cloak and buy one."
He said this because they would need to defend themselves.
And Jesus would consider himself a hero-
"Do not suppose that I have come to bring peace to the earth. I did not come to bring peace, but a sword."
(The battle of division between belief and unbelief... Mother against son, father against daughter, and so on.)
Jesus never said anyone was a hero for defending themselves. Being a hero first of all requires one to protect others than oneself. Kyle knew that there was a curfew, but he show up with a gun to protect something worthless.
Willing to kill others to save himself - not a hero, just a scared child.