First, folks who have been calling for prison abolition, for instance, tend to be anti-gun control because it's a tool that's used to put more black and brown people in prisons. A lot of these folks also call for defunding police.
Second, this is different from saying "citizens don't need guns." That different argument is simply based on the idea that people are less safe when they have guns, not more safe. While some is due to accidents, much of it is suicides.
I appreciate the discord between current political alliances, but explaining that it exists seems to imply that major reductions in policing is not a fully considered plan.