I blame it all on the Italians!
We had internment camps for the Italians, Japanese, and Germans during WWII. However, it was the Italians who protested against the TV show The Untouchables and the put down of the Mafia, and thus, I first heard the term Italian-American.
The biggest ethnic joke I heard daily was about the Japanese during the fifties and sixties. They took the insults in stride even though it was implied they were the stupidest people. When something broke, the joke was that it must have been made in Japan. In the late sixties, they were upgraded to have the mentality of apes. They could copy anything, but none of them had an original thought in their head. In the late seventies, when a Japanese man entered the room, the consensus was that he must be smart. Thirty years.
After the Civil War, blacks needed a hand because this was a despicable period in America. And many blacks were not educated. We should have taken the high road and congratulated every American for their hand in helping end slavery. Instead, we blamed the South, and unfortunately, Lincoln was assassinated.
Woodrow Wilson was a horrendous President who encouraged segregation and separated our military. I give Harry Truman a big thumbs up, even though his mouth should have been washed out with soap for how he referred to blacks. Some blacks in the fifties preferred the term negro or colored, but I love the phrase black is beautiful. Being black is beautiful and has some advantages, and every black should be proud to be black.
In the fifties, blacks were conservative, and their divorce rate was low, and church attendance was high. And as one previously posted, Congress unintentionally reversed all of this, giving extras to single-family households and the false impression that blacks cannot make it on their own.
I am confident Trump will change all of this B.S. IMO, we need to end the term diversity and embrace the term melting pot.