Biography
Sam Block was detained in Mississippi in the context of the civil-rights movement, as documented in Charles Payne’s interview-based history.
Payne individually names Block among five SNCC workers jailed and beaten in Columbus in early June 1964 and released the following day. A separate Greenwood account describes a February 1963 prosecution with a six-month imposed sentence, followed by release on bail. Neither the imposed term nor the calendar between events is treated as actual time served. Exact admissions, discharges and numerical durations remain unknown.
Source: Charles Payne, I’ve Got the Light of Freedom (2007 edition), original PDF page 120; original PDF page 207.
The contemporary SNCC chronology dates this Greenwood breach-of-peace arrest to February 22, 1963. It does not give a verified booking or discharge date.