How were the freedmens bureau and the ku klux klan different

The Freedmen's Bureau was a federal organization meant to assist African Americans by working to ensure they were being treated as equal to white people.

The Ku Klux Klan is a white supremacist, terrorist group, that often tortured and killed African Americans for fun (yeah, you read that right. they killed people for fun), and also to scare African Americans into once again becoming subservient to whites.