flood gate and blew a breach in the Bird's Point levee for the first time to relieve pressure on the Cairo flood wall. Following the flood, the concrete flood wall was raised to its current height. It is designed to protect the town from flood waters up to 64 feet. In 1942 the federal government constructed a new U.S. Post Office and Court House in Cairo. Still growing, the city had a population approaching 15,000. The new federal court house, located at 1500 Washington, was designed by the architects Louis A. Simon and George Howe. The U.S. District Court for the Eastern District of Illinois moved into the new court house in 1942, from the old U.S. Custom House and Post Office. After the U.S. district court structure in Illinois was reorganized in 1978, the court house was used for the U.S. District Court for the Southern District of Illinois. The building remains in use by the federal courts and as the active post office for Cairo. The court house was built and is operated by the U.S. General Services Administration. Lynchings Cairo's turbulent history of race relations is marked by the 1909 spectacle lynching of black resident William James. In 1900, Cairo had a population of nearly 13,000. Of that total, approximately 5,000 residents were African-American, or 38 percent. In 1900, this was an unusually high black population for a town of Cairo's size in the North. Five percent of all black residents in the state of Illinois lived here. Later in the early 20th century, Chicago became the center of black life in the state, as it was the destination of tens of thousands of migrants during the Great Migration. The Illinois constitution of 1818 allowed for limited slavery in the salt mines and allowed current slave owners to retain their slaves. The General Assembly also passed legislation that severely curtailed the rights of free blacks residing in the state and discouraged the migration of free blacks. If a black person was unable to present proof of their freedom they could be fined $50 or sold by the sheriff to the highest bidder. Not long after the passage of the constitution, the state's general assembly adopted a pro-slavery resolution that announced its approval of slavery in slave-holding states and at the same time condemned the formation of abolition societies within Illinois’ boundaries. Although blacks comprised a large proportion