They took days off of work to be at the parade or entire companies decided to not have work days on that October day. That was such a big event that it was also the first tape parade and some say that up to a million people enjoyed the parade and the reveal of the statue.
Assuming the time period was during the Cold War,
both countries brought threats of nuclear weapons and atomic annihilation
The Vietnam and Korea war, is because of people being unfair. In a more detailed explanation, it is happening because of people moving to the U.S. and so there are many spies for different countries inside of the U.S. That's how all of the camps had gotten started in the first place. And the U.S is very involved during this whole war too.
To end racism and seperation from African Americans and whites
Don't take my word, but it could have been because they were closer to Austria