More can be written, but you might like to read "What were the reactions to Japanese internment when it was happening?" by /u/sakuraxatsume , mentioned by Georgy_K_Zhukov in the most recent "Sunday Digest | Interesting & Overlooked Posts | June 25, 2018–July 01, 2018".

This is not to discourage discussion. More questions, data, and debate are welcome.