Her case, Murray v. Curlett, was consolidated with Abington School District v. Schempp before being heard by the United States Supreme Court.

Over the years American Atheists has filed numerous lawsuits against public institutions considered to have breached the constitutional separation between church and state.

The consolidated case, usually cited as Abington School District v. Schempp, was argued before the United States Supreme Court on February 27 and 28, 1963.

An atheist believes that he can get no help through prayer but that he must find in himself the inner conviction and strength to meet life, to grapple with it, to subdue it, and enjoy it.

They ruled that state-mandated prayer and unison bible readings in public schools were a violation of the Establishment Clause in the First Amendment to the United States Constitution.

Kathleen Johnson, founder of the Military Association of Atheists and Freethinkers, maintained that many "people manage to serve without having to call on a higher power.

"[14] The U.S. Department of Veterans Affairs eventually approved the logo of the American Atheists to be an "emblem of belief" for placement on government headstones and markers.

[15] In May 2007, ABC News featured a report on treatment of the Smalkowski family, declared atheists, by school officials in their small town of Hardesty, Oklahoma.

[16][17] Also that May, Joe Zamecki of American Atheists organized a local demonstration at the state capitol building in Austin, Texas, against the National Day of Prayer.

David Silverman became president in September 2010,[21] until his termination in April 2018, following an internal investigation over allegations of sexual assaults and financial conflicts.

A billboard on the Brooklyn-Queens Expressway displaying the Hebrew Tetragrammaton erected after the celebration of the Jewish holy day of Purim caused outrage from many Jews.

[31] The same billboard was rejected by a landowner in an Orthodox Jewish neighborhood, which drew a reaction from American Atheists' president David Silverman, who stated that this was a case of religious bigotry.

[32][33] A satirical billboard depicting the Nativity during the Christmas season was also erected in 2010, causing a reaction from many American Christians, including the construction of a counter-billboard by the Catholic League.

The President of American Atheists, David Silverman, explained that the new channel would "...provide a breadth of content, from science to politics to comedy, all centered around our common freedom from religion.