Of course you are right with regards to striking with black janitors. In my mind, that goes without saying the janitors were black. I learned that piece of history during a labor praxis at a black church while I was in grad school. My former employer (black historian and activist Vincent Harding) wrote the Beyond Vietnam speech, and he's the one who implanted the "Martin was killed while working for economic justice" narrative in my brain. But in these times, I can't afford to be lazy with the message; it serves no one to use imprecise language.
I will also take heed of your warning to proceed with caution on The Black Agenda page. Do you have other sources to recommend to me?
shaayecanaan racially identified as as a Arab and non-American in their first post in this thread.