There was a time when everyone knew what the question was referring to and had an answer.
I was a 1st grader at Culbertson Elementary School in Joliet, Illinois. We heard the news from Dallas while we were in class. A little while later the janitor came in and put black cloth over the American Flag. The teacher put her head down on the desk and cried. That night at home there were black and white images from Dallas on the television.