Verified Answer :

James Chaney (1943-1964) was a civil rights activitist from Mississipi who was murdered during Freedom Summer by some Ku Klux Klan members, because of this attempts to register African American voters. He sought to end the tendency that had operated during 70 years in Mississipi, that prevented blacks from accessing voting by the disenfranchisement of potential black voters.

His two partners from NY City, Andrew Goodman and Michael "Mickey" Schwerner, were assasinated too.

Answer: Medgar Evers

Explanation: Edge 2020