File--In this Thursday, May 12, 2016, file photograph, protesters wave a banner during an attempt to disrupt a federal auction of drilling rights at a hotel in Lakewood, Colo. More than 200 people turned out to protest the Bureau of Land Management sale. Documents released on Wednesday, July 19, 2016, show that undercover officers mingled with protesters to garner information and relay to police officials. (AP Photo/David Zalubowski, file)
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