Poinsett County was the hardest hit county by the Great Mississippi Flood of 1927 , which flooded thousands of fields and destroyed homes countywide . The Southern Tenant Farmers Union was founded in 1935 in Tyronza during the Great Depression . The organization was an interracial union to improve the pay and working conditions of poor sharecroppers . It met violent resistance from white planters , with union leaders and members attacked and some killed throughout its areas of organizing in Arkansas and Mississippi . The Southern Tenant Farmers Union Museum in Tyronza is now operated by Arkansas State University
Great Mississippi Flood of 1927
Great Mississippi Flood of 1927
Poinsett County, Arkansas