Question: Three civil rights activists were working on what project when they were abducted and murdered in June of 1964?
Sentence (from "Murders of Chaney, Goodman, and Schwerner"): This registration effort was a part of contesting over 70 years of laws and practices that supported a systematic policy of disenfranchisement of potential black voters by several southern states that began in 1890.
Relevant evidence: No