Just to clarify:

"The swastika is a symbol of prosperity and good fortune and is widely dispersed in both the ancient and modern world"

Indeed, but the only germany-related use is the nazi symbol..

"In 1935, the black swastika on a white circle with a crimson background became the national symbol of Germany. The major difference between the Nazi swastika and the ancient symbol of many different cultures, is that the Nazi swastika is at a slant, while the ancient swastika is rested flat."

In 1935, the nazi party was already heavily influencing the "cultural life" of Germany. That other swastika came along with it