The 1940 Survey Of Military Personnel About Jews has what would now be considered unpopular opinions:

78%+ of the US military wanted to keep negro units segregated

86% of enlisted men agreed with the statement "There is nothing good about Jews"

90%+ disagreed with the statement "If the Jews who are now in Europe want to come to the United States, we should let them in" which is even more notable considering that...

83% of officers and 60% of enlisted believed Jews "suffered very much under the Hitler government"

The 1940 Survey Of Military Personnel About Jews has what would now be considered unpopular opinions:

78%+ of the US military wanted to keep units segregated

86% of enlisted men agreed with the statement "There is nothing good about Jews"

90%+ disagreed with the statement "If the Jews who are now in Europe want to come to the United States, we should let them in" which is even more notable considering that...

83% of officers and 60% of enlisted believed Jews "suffered very much under the Hitler government"