Bill Nye, Lewis Black and members of the Wu-Tang Clan will be part of a high-profile lineup preaching to a mass of atheists Saturday at the Reason Rally at this city’s Lincoln Memorial. The coalition of secular organizations is expecting 30,000 people to descend on Washington, where they will call for a non-religious approach to politics amid a hotly contested presidential campaign.

They also hope to flex the political muscles of the religious unaffiliated, turning one of the fastest-growing groups in the country into a powerful voting bloc. While the rally has scheduled musical entertainment, flashy speakers and late-night cocktail hours at neighboring hotels, the thousands of “nones” — people who don’t identify with any religion — coming to the nation’s capital also have a more serious agenda. FULL REPORT