The "most despised group"? 

I take it, you never read about the Anti-German fever as the US entered WWI, or "The Chinese Exclusion Acts" of the 1800's. 

Some of this legislation, lead by the progressive Democrat party, not only limited the immigration from China, but in some cases, required those of Chinese descent, to have special permits to operate a business. 

Finally, by the early 1940's, these laws were repealed,  however the racisism toward Asian-Americians seems to persists, in many of the "better" schools.