I want to know the answer to the following question:
What did red white and black become associated with in Germany?
All the background I'm provided with is that "The red part of the flag was also chosen to attract attention - Hitler wrote: "the new flag ... should prove effective as a large poster" because "in hundreds of thousands of cases a really striking emblem may be the first cause of awakening interest in a movement.". Is that enough to answer the question?