Liberals are so slow to learn.
This peaceful scenario has been proven a thousand times, and a cliché has even sprung up.
An armed society is a peaceful society. How old is that Robert A. Heinlein quote?
Actually, the RAH quote is that an armed society is polite, not peaceful.
The two don’t necessarily go together. The Paris of the Three Musketeers had immensely elaborate structures for polite interaction. It was not at all peaceful, with lots of dueling and even more brawling of a less formal nature.