Maybe..... the signing of the constitution???
Answer:
Katherine faced discramtion from the people in the office for the space comands. Dorthy had to face a book that she wanted only to be whites only. And mary fought to get into an all-white college!
Explanation: The hidden figures movie explains a lot about all!
People helped the slaves because they thought it was cruel what they were doing to the salves. So they created a thing called the Underground railroad where they would travel to a state that doesn't allow slave labor.