God commands us to defend the life He gave us. That includes firing back. The more people who do so, the better.
I hope you're also not hanging out with straight people who are having sex outside of marriage. Or divorcées who remarried. They're violating the same Commandment. Now, THAT would be choosing to be a friend of the world.
Still not how it works. One man can do it if God gives him the power, in fact.
The only way the unrepentant can aid “our side” is if they cease to be unrepentant, or else God’s wrath will still weigh heavy on the nation.