After demobilisation in 1946, Benenson began practising as a barrister before joining the
Labour Party and standing unsuccessfully for election at
Streatham in 1950 and for
Hitchin in 1951, 1955, and 1959. He was one of a group of British lawyers who, in 1957, founded
JUSTICE, the UK-based human rights and law reform organisation. In 1958, he fell ill and moved to Italy to convalesce. In the same year, he converted to the
Roman Catholic Church. Benenson was a member of the
Fabian Society and wrote "The Future of Legal Aid" which was published by them in 1957 .
Activism Benenson had said he was shocked and angered by a newspaper report of two Portuguese people sentenced to prison for subversion during
the regime of
António de Oliveira Salazar. At the time, Portugal was ruled by the authoritarian
Estado Novo regime, and anti-regime conspiracies were vigorously repressed by the Portuguese state police and deemed anti-Portuguese. He wrote to
David Astor, editor of
The Observer. On 28 May 1961, Benenson's article, entitled "
The Forgotten Prisoners", was published. The letter asked readers to write letters showing support for all those imprisoned for their political or religious beliefs. To co-ordinate such letter-writing campaigns,
Amnesty International was founded in London in July 1961 at a meeting of Benenson and six other men, who included a
Conservative, a
Liberal and a
Labour MP. The response was so overwhelming that within a year various groups of letter-writers had formed in more than a dozen countries. ==Amnesty International==