In the 1950s he actively campaigned for the adoption of the Bertrand Russell peace petition. He described himself as a Marxist, and in 1954, he was accused of being a member of the Communist party and called to testify before the House Un-American Activities Committee. After his testimony, he was fired from his job as a commercial artist, turning to freelance work. In the 1960s and 1970s, Abbott was one of the leaders of the Emergency Committee on the Transportation Crisis, organizing the opposition to the construction of the North Central Freeway through Northeast Washington and Takoma Park, using the slogan, "No white men's roads through black men's homes." He was also part of a group of local residents who organized against construction projects threatening Takoma Park. In 1978, Abbott helped to organize the first Takoma Park Folk Festival to raise money to save the Takoma Theater.
Mayor of Takoma Park
Abbott ran for mayor of Takoma Park in 1978, but lost by just 8 votes. He won the office in 1980, and was re-elected in 1982 and 1984. As mayor, he oversaw the institution of rent control, installed speed bumps and four-way stops to slow traffic, and he successfully blocked the closing of public schools in Takoma Park. During his tenure, Takoma Park declared itself a Nuclear-free zone and a sanctuary for Salvadoran and Guatemalan refugees. Abbott declared Takoma Park "Tree City, USA," and the city, which had been known as "Tacky Park," acquired the nickname of the "People's Republic of Takoma." In his bid for a fourth term in 1985, Abbott lost by just seven votes.
Death and legacy
Abbott died of myelodysplasia anemia on December 15, 1990, at his Takoma Park home. The Takoma Park City Council passed a resolution lowering the city flag to half-mast, and the Montgomery County Council declared January 5, 1991, Sammie Abbott Day. Hundreds attended a memorial service that was held at the Washington Ethical Society. In 1991, Takoma Park added the name "Sam Abbott Citizens' Center" to its municipal building. In 2002, Abbott was inducted into the Montgomery CountyHuman RightsHall of Fame. In 2015, a plaque was dedicated for Abbott in the Citizens' Center. The plaque recognizes Abbott's contributions to Takoma Park and concludes with a quote from him: "If we can't make it happen in Takoma Park, there's no hope for the nation." Abbott's wife, Ruth, died in 2009, and they are survived by their children Nancy Abbott Young, Susan Abbott, and Abraham Abbott.