Here is a link to India House which was opened in 1930.

You can see the symbols featured on the building- one that is controversial but back in 1930 was not so. https://en.wikipedia.org/wiki/India_House,_London

Rudyard Kipling used this symbol on the spine of his books but as events in the early 1930s progressed he decided not to use it because he felt it was being tarnished. The cross shape known as the Iron Cross has been used as the insignia of the new German air force since it was created in the 1950s and is not considered controversial.

https://en.wikipedia.org/wiki/German_Air_Force