Following the abolishment of the Grandfather Clause, whites added a poll tax. Since this was recently after slavery, and segregation was at its peak, African-Americans were not paid as much as whites. Due to the wage gap, blacks and poor whites were unable to pay the charge required to vote.
Through to about the twentieth century, most of the resources were funneled to white schools first. This caused an increase in teacher salaries and per-pupil funding while it also reduced the size of classes. This also led to a decrease in quality of the education and learning spaces available to blacks.
With the recent termination of slavery, it left southerners with a strong dislike of the colored community. This being said, the average wage gap between black and white teachers was extreme. In some places it was as far as $500. Not only that, but the only reason that the wages came even close in some states is that most black schools were in cities were all wages are generally higher.
During slavery, most of the slaves lived in rural areas, so naturally that is where many lived recently after being freed. After a while, the blacks who lived in these areas weren't making enough money to get out and go by a home in other places and they didn't have access to land either. In the 1900's the racial gap in home ownership rate was approximately 25% points.
When jobs began being available, blacks were the last hired. Then when the economy began to struggle, they were also the first to be fired. Not only could blacks not get jobs, they were only ever given low skill jobs. When 2 million blacks moved from the south to the north, they found that northern whites shared the same attitude about the skills of colored people. As the applied for jobs in war industries, they were often hired as janitors rather than to work on the assembaly line.
The mammy (mammie) caricature is a overweight, very dark skinned, maid dressed woman. She is shown as being happy with the work that she has, caused people to thinks that black people were happy with the state they were in. Mammy was the original inspiration for what we know to day as Aunt Jemima.
The Coon Chicken Inn is a restaurant chain that was completely racist toward black people. Inside, it was decorated from ceiling to floor in pictures and decorations displaying blacks poorly. It was most known for its 'Coon' logo, it was placed on postcards, news paper adds, matchboxes, children's fans, spare tire covers, delivery cars, plates, forks, and menus. The enterence to the restaurant was a 12 foot high 'Coon Head' Almost all of the employees in the restaurants were white, except for the Salt Lake City branch which hired some blacks to work in the kitchen.