The theme of the gathering in celebration of The Satanic Temple's 10-year anniversary is "Hexennacht in Boston," German for "Witches' Night," which marks the ancient pagan holiday of May Eve.

Founded in 2013, Massachusetts-based The Satanic Temple has battled multiple districts, most recently in Pennsylvania, over its legal right to operate its After School Satan Clubs.

The Satanic Temple expects its second annual convention — held in Boston this weekend, and dedicated to Boston Mayor Michelle Wu — to be the largest gathering of Satanists ever. The Satanic Temple, ...

The Satanic Temple's HAIL program will aim "to fill the gap by providing an alternate RTRI experience to all students, regardless of religious affiliation," the organization said.

The Satanic Temple has had to restore its holiday display in front of the State House in Concord, N.H., a second time after an additional bout of vandalism.

The Satanic Temple is increasing its work in schools across the country, trying to combat a rise in religious teachings. The group, launched in 2013 to battle the “intrusion of Christi… ...