The Daily Telegraph explains:
Several hundred people have attended a Mass at a US Catholic church to protest against an eight and a half-foot (2.6-metre)-tall bronze statue of Satan that hundreds of people also lined up to see. […] The Satanic Temple had said it would unveil the statue on Saturday at a Detroit location that only people with tickets would know about. Hundreds lined up on Saturday evening to get the tickets as Christian protesters rallied nearby. […] The bronze Baphomet statue, featuring a human body, goat’s head and wings, was unveiled just before midnight to cheers of “Hail Satan”. Statues of a boy and a girl in poses of adoration stand on either side.
The statue had been planned for the state Capitol in Oklahoma City until Oklahoma’s Supreme Court banned all religious displays on Capitol grounds. […] The Satanic Temple now says it wants to erect it outside Arkansas’ statehouse, where a Ten Commandments monument also is planned.