From the paper:
Did it really take eight armed men and a squad-size display of paramilitary force to check for dirty water? Some of the miners, who run small businesses, say they felt intimidated. Others wonder if the actions of the agents put everyone at risk. When your family business involves collecting gold far from nowhere, unusual behavior can be taken as a sign someone might be trying to stage a robbery. How is a remote placer miner to know the people in the jackets saying POLICE really are police?