When Guns Aren't Outlawed, Non-Outlaws Will Have Guns
The assertion that the Second Amendment is needed to defend against a potentially-repressive government is frequently greeted with incredulity. We have an actual case now. Dallas passed a law outlawing feeding the homeless without a license. A libertarian organization fed the homeless without a license but while armed. The police decided not to bother enforcing the law. It's a plausible guess the police would have been more stringent with an unarmed group.
Please note this is not a way to change people's minds; it is a way to intensify already-present opinions. If the activists had tried distributing heroin instead of food, there would have been arrests. An attempt to enforce an anti-homeless law would have been blamed on the police since anti-homeless laws are already regarded as dubious. An attempt to enforce an anti-opiate law would have been blamed on the activists since anti-opiate laws have widespread support.
I don't know if they could get away with hiding illegal aliens this way.