There are no shortages of reasons for why arming teachers is a terrible idea (see The Best Articles & Videos Explaining Why Arming Teachers With Guns Is A Bad Idea).
That “Best” list includes some articles on specific policy implications for students and teachers of color.
However, here are two new very important articles on that issue that are definitely worth reading:
A big question in the debate about arming teachers: What about racial bias? is from The Washington Post.
You might also be interested in New & Revised: Resources To Help Us Predominantly White Teachers To Reflect On How Race Influences Our Work.