It is a historical error for those who were not there to just refer to August 28th as 'I Have a Dream' speech day. That is a real disservice to those who were there. It was a sad day. It was not a celebration environment.
Now if we look at the way in which the labor movement itself has evolved over the last couple of decades we see increasing numbers of black people who are in the leadership of the labor movement and this is true today.