And I can't recall it verbatim, but I can paraphrase it: Men use the law to punish crime instead of violence. For example, if my neighbor shoots my dog, I don't shoot him or his dog, I call the cops.
However, if the law fails to punish the lawbreaker, or instead punishes the law-abiding because it's easier to punish those who aren't criminals, then men retain the right to once again use violence instead of the law.
Why this quote? Because the deadbeat who walked into a Texas church and opened fire has a rap sheet dating back to 1998, including multiple gun felonies, and was still walking around free.
Two people are dead because the law refused to punish the criminal. When criminals start showing up dead, and nobody saw nothing Officer, don't be shocked. This situation has been building for a long time. I'm willing to bet money that there are Texas ranchers close to the border that have simply shot a few Coyotes, and left their corpses for the coyotes to deal with, because the Federal Government hasn't done a single fucking thing in their lifetimes to stem the tide of criminal activity, be it drug smuggling, human smuggling, sexual slavery of children, or wanton destruction of the rancher's property.
If the government refuses to enforce the law, don't be shocked when citizens decide to take the law into their hands.