Hated? Well, by some people, yes. To say they were broadly hated is a bit strong. If that were true, how could Jews rise to such prominence in so many professions as doctors, lawyers, financeers, scienctists, and academics? This was already happening long before the 1950's. Goldman Sachs has been a top financial firm in the USA for over 100 years, for example.
That's not to say Jews were completely accepted in society early in the 20th century. Sure there was descrimination and a certain reluctance to accept them into the mainstream. Some Jews had trouble getting into coops on 5th Avenue in New York, for example. The result was what I like to call the Tragedy of Central Park West.
All this started to change in the 50's after the war. In general most people didn't like anyone different from themselves.
That's also a bit strong. I'd say most people try to limit the extent to which they associate with others different from themselves.
You simply have no idea of how much things have changed.
I have a fair idea.
You might have a idea and thats it. Other than large cities like NY which is not the US my experience is different. How were the Mormons treated. How did they treat anyone of another faith in their territory. We didn't have PC.
Albert Einstein Medical College was started in the 1950's because Jews mostly were not allowed into medical school.
"Gentlemen's Agreements" prevented Jew from buying houses in many areas.