Final answer:
In 1958, Schwerner, Goodman, and Chaney, who were African-American volunteers from Mississippi, were beaten and murdered by Klansmen with the support of local police.
Step-by-step explanation:
The couple who went on a horrifying murder spree in 1958, leaving ten people dead over 26 days, is known as Schwerner and Andrew Goodman and James Chaney. They were African-American volunteers from Mississippi who were beaten and murdered by Klansmen with the support of local police.