I wonder if I wrote something like this for Black History Month and submitted it to the local liberal rag if they would publish it.
Sure! Go for it! I am planning to.
I might make one tiny suggestion, however; you need not refer to your local liberal rag as a "liberal rag", at least not in the same communication.
Simply by ommitting this popular and well-known sentiment, your letter will stand a much better chance of actually being published.