It reinforced segregation and discrimination.
Booker T. Washington (1856-1915) advocated gradualism. That meant being patient and doing what white society would allow, which meant changes and better times for blacks would come slowly.
A different point of view was taken by W.E.B. Du Bois (1868-1963). Du Bois noted that Washington's approach was not accomplishing any real gains for blacks. He also felt that Washington's point of view showed acceptance of the racial inferiority of blacks. Plus he saw that institutions in the black community were being dominated by persons like Washington, rather than really empowering all individuals for themselves. Du Bois argued that all black citizens should have the right to vote, equality as citizens, and access to education according to their abilities, and his approach was more confrontational, attacking segregation using protests, lawsuits, and publications. Du Bois was strongly active in the National Association for the Advancement of Colored People (NAACP).
I believe they were both harmed by nuclear radiation. Hiroshima was when the USA bombed Japan with a nuclear bomb. Chernobyl is the disaster in which a reactor caught fire and caused the harmful radiation to spread. I hope that was helpful. :)
