In this time, caricature was popular and in this picture, a black woman is being caricatured as dark black skin and large lips. This also shows in the corner that Pennsylvanians voted for "Negro" or black suffrage. This meant that there was a law that gave blacks a right to vote, which means that before this time, blacks couldn't vote.
The Great Depression
In Roll of Thunder, Hear My Cry it takes place during the Great Depression where one out of every four Americans lost or had no jobs to keep supporting their families. This was caused by the stock market crashing in the 1920's and ended by rising in the late 1930's. During this time, Central America was going through a severe drought which brought a ton of dust storms which nicknamed the area at the time the "Dust Bowl".