US history books seem to go from a series of very negative stereotypes for Asian-Americans (i.e., Chinese-Americans during the building of the US railroads, or WWII Japanese-Americans being interned and their property largely forfeited) to becoming, collectively, a “Model Minority”.

This conception is problematic for a variety of reasons, but is more positive than previous stereotypes. Yay?

Were there any significant events that caused this shift, or did it emerge organically? When did this shift happen? When did broader society realize it was offensive and what caused the term to fall into disfavor when it did?