Dr. Benjamin Spock a pediatrician famous for writing the extremely popular book “Baby and Child Care” was born in 1903 and passed away in 1998.  Dr. Spock was also a left wing political activist who even running for president on the People’s Party ticket.  In particular Spock became well known as an anti-Vietnam War activist.
In 1968 Dr. Spock was convicted of “conspiring to counsel evasion of the draft” along with four other people from Boston.  Throughout 1967 and 1968 Dr. Spock was involved in various protests to the Vietnam War which culminated in an October 16, 1967 event in which a few hundred people burned their draft cards. In January of 1968 Dr. Spock was indicted and in July he was sentenced to federal prison. Later, the two-year sentence was appealed and overturned before he served any time. 
The photos below are from a protest in Post Office Square in Boston in 1968 in response to Dr. Spock being indicted.