Initially, this term was generally used for Asian-Americans but has now expanded to Indian-American as well as African migrants.
I would recommend reading the wikipedia article first to get a base knowledge before reading the news pieces.
Model minority - Wikipedia
en.wikipedia.org
'Model Minority' Myth Again Used As A Racial Wedge Between Asians And Blacks
The perception of universal success among Asian-Americans is being wielded to downplay racism's role in the persistent struggles of other minority groups — especially black Americans.
www.npr.org
