Complex sentence: Brown's arguments, including the attribution of popular culture phenomena including biofeedback, yoga and rock music to Satan, have been called "extreme and even humorous" but material from her books has been included in law enforcement briefings.
Split into simpler sentences: Brown's arguments, including the attribution of popular culture phenomena including biofeedback, yoga and rock music to Satan, have been called "extreme and even humorous". Material from her books has been included in law enforcement briefings.