It was founded in Porto Alegre, Rio Grande do Sul, Brazil, on February 1, 2010.
Its foundation was preceded by the activities of its blog, Bule Voador,[2] arguably the largest secularist website in Brazil.
LiHS took part in the 100 cities against stoning protest on August 28, 2010, a campaign for saving Sakineh Mohammadi Ashtiani and others from execution in Iran.
The Brazilian Supreme Federal Court lists LiHS as one of the speakers against religious teaching in public schools in an upcoming trial.
[8] LiHS has organised the first Secular Humanist Congress in South America, taking place in the city of Porto Alegre, RS, Brazil, with the support of the International Humanist and Ethical Union and Atheist Alliance International.