Truman Years 1945-1953- During the years of Truman's presidency, he attempted to pass a number of laws advocating for the rights of those who were being segregated. During his first term, they were not passed, but during his second they were.
Jackie Robinson- He was an African-American baseball player. He was the first to join the major leagues for baseball despite being black. He marked a significant moment in US history and led the way for many others.
Brown vs. Board of Education- The US had been abiding by the ruling from Plessy v. Ferguson, which stated that segregation of races to different schools was constitutional so long as the facilities were, "separate but equal." In the case of Sweatt v. Painter, some school were ruled unconstitutional for failing to abide by that rule. Brown vs. Board of Education later decided that all segregation in schools was unconstitutional.
NAACP Official complaint in Kansas- Argued that any segregation did not meet the "separate but equal" criteria because segregation inherently makes people feel inferior.
Thurgood Marshall and his decision- Was the lawyer representing the case to end segregation. His efforts and the efforts of many other led to the unanimous decision to declare segregation unconstitutional.