Not to detract from your excellent point but when it comes to personal defense against crime, this applies to everyone who doesn't have private security. Even if the police are 100% on your side, they can't help you if they aren't at your side. When seconds count, the cops are only minutes away.
I prefer to focus on the Black Panthers use case because there is an interesting cognitive dissonance in the modern left in that anti-racism and gun control are both promoted by the same ideological groups. Tends to be more persuasive in my liberal social bubble as I see a growing lack of empathy for rural Americans.
My personal litmus test for gun control legislation is: "Would this law meaningfully decrease access for a black single mother who is a victim of domestic violence and does not have confidence in a timely police response?"
Guns are not a good defence against many wild animals. Get some bear spray, it is dramatically more effective and will not kill somebody as easily if you accidentally shoot a person in the dark!
Point taken about the civil rights marches though
Sounds like you just made a great reason for concealed carry.
Fourth rule: always identify your target.
Even despite the dark, you can attach a flashlight to your firearm that allows you to quickly identify the target before shooting at it. Most modern guns have that capability.
Maybe another litmus test should be "does this meaningfully decrease access to guns for a person who is planning a mass shooting?"
I don't have any stats, and I suspect more single black women die than people at the hand of mass shooters, but you see my point - it's a game of tradeoffs and focusing on a single dimension is myopic.
It is certainly somewhat arbitrary, but I think it functions as an example of a group that is often physically disadvantaged vs attackers, institutionally disenfranchised, and has reasonable apprehension at the idea of relying on police protection.
Similarly, I like to think about economic legislation in terms of "how would this law affect the chances that a child born into the poorest neighborhood will one day become wealthy?". I think by framing it in a way that lets me imagine a hypothetical individual who is currently least-empowered, it allows me to consider things with a bit more empathy as I can imagine myself in their shoes rather than abstractly thinking about groups. Its hard to reason about fairly balancing many concerns of many groups with various levels of power simultaneously, so I think iteratively looking for laws that would empower the least-empowered can function as a sort of shorthand for moral reasoning.