When I was a kid, I asked a couple of the older generation (WW II generation) why was it that the interment camps held Japanese (more accurately Japanese-Americans) while the U.S. had also been at war with other countries. I was told the reason was 'Japan attacked the United States.' Somehow that didn't seem to be the answer.
Even if you take into consideration Hawaii wasn't exactly the United States at the time, I later learned about this from a variety of sources:
https://www.newenglandhistoricalsoc...ii-6-months-of-secret-terror-in-the-atlantic/
So while Japan bombed Pearl Harbor, there was at least as much danger from Germany..
And, while American citizens of Japanese ancestry were held in camps, in the area where I lived as a young child Italian POWs from the nearby V.A. hospital were taken into town to public movie theaters...
The REAL reason, from my POV: Japanese-Americans "looked different" than individuals with Caucasian ancestry.
And I fully believe that's the reason for anti-immigration these days focusing only on "our brown-skinned neighbors from the south."
These days, though, with the internet, there's even more room for propaganda. The 9/11 attacks did not involve Hispanics, nor, as someone posted in the Retirement section individuals from foreign countries buying up real estate and causing many Americans to become homeless.
When Hispanics commit crimes, it's all over the web for many years; when it's someone else, little is said.
A few years ago, two college girls were murdered. As one was allegedly murdered by an "illegal alien," there's been no end to the ongoing coverage; as the other girl was murdered by a white American citizen, virtually nothing was said after the guy was convicted.