You might be hang up on the additional narrative attached to the word “minority”. Consider using “underpriviledged ethnic group", as a. not even today all ethnic groups are equal and b. it is entirely possible some other ethnic group to raise to demographic majority status, and still exhibit the socioeconomic characteristics of a poor population.
>You might be hang up on the additional narrative attached to the word “minority”.
You can't separate words from their "additional narratives" and expect all people to understand what you're attempting to convey. The context and connotation around words is absolutely necessary for communication, and to eschew it leads to poorer communication.