A landlord refuses to rent an apartment to an African American based on race, even though there are vacancies. What is this an example of?

Related questions

• How did Plessy v. Ferguson make the fight against segregation more difficult?
• What was the significance of the Supreme Court's ruling in Plessy v. Ferguson?
• How does Douglass become known to the anti-slavery world?
• Who was Rosa Parks, and what was her role in the challenge of Jim Crow laws?
• When did Martin Luther King, Jr. deliver his famous "I Have a Dream" speech?
• How do the views of Martin Luther King Jr. compare to those of Malcolm X?
• How was the Civil Rights Movement affected by the deaths of Malcolm X and Martin Luther King Jr?
• Who were Exodusters?
• What happened in Little Rock during the summer of 1957 to help set the stage for the crisis at...
• What was the purpose of the Jim Crow Laws?