How about we fund mental healthcare nationally, reduce wealth inequality, and end racial disparity in policing first?

Until then, an attempt to ban all guns is not only a politically infeasible waste of energy, but also seems like a racist attack on the self-defense rights of the disempowered.

"What about...". There are mass shootings in schools every year. How about we solve the problems you mentioned and the others in parallel. US spends enough on military budget , they can cut back and solve these. The disempowered don't need "white knights", they are the ones often dying to gun violence.