In Brown v. Board of Education, it was about the browns being unable to attend an all white school. At the time, schools were segregated and it was unconstitutional. In the constitution, there is amendment 14, where all citizens are created equal. In other words, all races, as long as their citizens, are given the same rights.
Some ballerinas fell to the floor when George heard the noise in his head because he might've been thinking of the ballerinas falling and then it all sorta just happened. Hope this helped. Have a great day! :D