Or worse.

A good reason to know the relevant laws before something happens. I live in a Constitutional Carry state, but I still took the carry permit class, not only for reciprocity when traveling out-of-state, but also to learn my state's carry and self defense laws.

While it seems to be a somewhat controversial subject in these forums, it may also be worth it to consider one of the self-defense legal services available, or have a lawyer knowledgeable of self defense law on retainer. Like a gun, you may go through life never needing it, but if you do, you really need it.