People are voicing their concerns over the Environmental Protection Agency's rules concerning biofuels.
KELOLAND's Casey Wonnenberg sent us photos of the rally.
Participants say proposed changes to the Renewable Fuel Standard could harm South Dakota's corn industry. They are calling on Administrator Scott Pruitt to remove regulatory barriers to higher ethanol blends.
We will bring you reaction from today's rally tonight on KELOLAND news at five, six and 10.
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Dozens of farmers and workers at biofuel companies are rallying at Falls Park in Downtown Sioux Falls on Tuesday.