It's rare to think of a religious organization standing up for the principle of the separation of church and state, but then again the Satanic Temple is not a typical religious group. Penny Lane's new documentary, Hail Satan?, not only examines the merry irreverence and messages of tolerance celebrated by Salem, Massachusetts' Satanic Temple, it also makes serious points about how Satanists have staged provocative public protests that challenge the various ways that Christian-right extremism has filtered into public spaces, such as the attempted installations of Ten Commandment statues on government property.

Hammer Museum, 10899 Wilshire Blvd., Westwood; Tue., April 16, 7:30 p.m.; free. (310) 443-7000, hammer.ucla.edu.

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