Billings, Oct. 22 -- Federal employees overseeing U.S. public lands were assaulted or threatened at least 360 times over a five-year period marked by heightened tensions with anti-government groups, a congressional watchdog agency said Monday.

The Government Accountability Office in a new report highlights anti-government tensions that at times have boiled over, including a six-week armed occupation of a federal wildlife refuge in Oregon in 2016 and other standoffs with armed protesters in Montana and Nevada.

The clashes have been rooted in a deep distrust of government on the part of the protesters, who view the federal bureaucracy as unlawfully impeding people from using public land for grazing, mining and other economic purposes.

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