ADVANCE FOR USE TUESDAY, JUNE 13, 2017 AND THEREAFTER-In this June 17, 1967 photo, people gather at the Monterey Fairgrounds during the Monterey Pop Festival in Monterey, Calif. Fifty years ago in June 2017, the three-day concert in the San Francisco Bay area gave birth to the "Summer of Love'' and paved the way for today's popular festivals. (Monterey Herald via AP)
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