You're not right but whatever. Get more people to agree with you and change the Constitution. Until then I think better laws that deal with reality NOW (ex: Guns are here, they're not going anywhere. The US isn't Australia and millions of us aren't going to merrily turn in our guns if ordered. But steps like safe storage, magazine size limits, and increased incarceration for violent gun crimes, ) and actually get policies that might actually make a difference. Basically don't let perfect be the enemy of good.
Maybe a few years ago I would have agreed with you on those point. But I realized that the opposition groups are extremely powerful and would stop most of those types of laws, so I'd be wasting my time. Furthermore, demanding slightly more stringent storage rules or harsher penalties are not exactly rallying cries that anyone would get excited about. Case in point, the assault weapons ban was pretty pointless in what it accomplished and was ultimately rolled back in the end. I came to conclusion that the only to change people's mind is go after the source: deny the concept of the right to bear arms.
Regarding slavery and Jim Crow...to be blunt the notion that you consider civilian firearm ownership to be of the same moral reprehensibility as Jim Crow and Slavery is really condescending to people of color.
In terms of harm to minorities groups its really not that far off. About 1.3 million Americans died of guns over the last century.
There were times we USED those guns to protect ourselves. Ironically during slavery many times Master's loyal slave would be permitting to possess a firearm to protect livestock/property while the freeman would be barred from ownership. Not to mentioned organized groups like Deacons for Defense that used their gun rights for self-preservation.
That's some random group that accomplished nothing in the end, and probably hurt their causes if anything.
And if you want to ban guns based on cruelty you should be focused on removing guns from government possession first and foremost. They have inflicted FAR more cruelty than civilian firearm ownership ever could.
I'm not saying no to this either. In fact, that's likely a major benefit of abandoning the concept of gun rights, so that very few people, civilian or government officials, are allowed to have them, making a much safer society overall.