The Jim Crow laws didn't let African Americans go to the same parks as whites. According to the National Park Service, it was "unlawful for colored people to frequent any park owned or maintained by the city for the benefit, use and enjoyment of white persons If a black man or woman was in a white park, they could get lynched or punished.
During the era of Jim Crow, several voting laws made it hard for African-Americans to vote. Poll tests were difficult and designed to be failed. Taxes were required, and many poorer African Americans could not afford to pay in order to vote. Finally it was difficult to find transportation to the polls, and even the sheriff could stop them from voting entirely.
The Great Depression
The Great Depression was a time when the stock market crashed, and most people lost their jobs. It was hard for people to get new jobs. During the Great Depression, many people not only lost jobs, but lost their homes as well. Since they didn't have jobs, they couldn't afford to pay for their house and had to live on the streets in tent. In the Roll of Thunder, Papa had to work on the railroad, because it was hard for him to get any other job because of his color, and because of the Great Depression. Many people suffered from the Great Depression.