Harriet Tubman on the $20: Honor or Disgrace?

Former Presidential candidate, BEN CARSON said, "Putting HARRIET TUBMAN on the $20 bill makes her the new face of slavery."  Presidential candidate and GOP front runner, DONALD TRUMP, called the it a move 'political correctness' and suggested TUBMAN grace another denomination such as the $2 bill instead.  For AFRICAN-AMERICANS is this a symbolic gesture that should be celebrated or is it a disgrace to TUBMAN's legacy.  PRESIDENT ANDREW JACKSON'S image will remain on the back of the $20, DESPITE his horrific track record of attrocities against NATIVE AMERICANS should he be removed altogether?  MD asking the questions America's afraid to ask?  ALL I ASK IS THAT YOU THINK