Give me a summary for David Walker's Appeal.

The goal of the Appeal was to instill pride in its black readers and give hope that change would someday come. It spoke out against colonization, a popular movement that sought to move free blacks to a colony in Africa. America, Walker believed, belonged to all who helped build it. check this out:

https://www.pbs.org/wgbh/aia/part4/4h2931.html