Following the U.S. Army Corps of Engineers' recent approval of the proposed Dakota Access Pipeline, a coalition of environmental activists held a rally in New York City's Union Square Park to oppose the project.
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"Tonight's victory is not about one person; it belongs to generations of women and men who sacrificed and made this moment possible," Hillary Clinton told a cheering crowd during her primary night event Tuesday in New York City.
An oil field truck is used to make a transfer at oil-storage tanks in Williston, N.D., in 2014. It was atop tanks like these that oil worker Dustin Bergsing, 21, was found dead.
Colorado educators take part in a concealed carry course in Englewood, Colo., on Nov. 8. The course is open to all state school employees. Participants who complete the training are eligible to apply for a permit to carry a handgun.
Quinault Indian Nation President Fawn Sharp stands on the docks as tribal crabbers unload their catch. The tribe has vowed to fight the oil train-to-ship terminals proposed for Grays Harbor.
Abortion-rights supporters outside the Supreme Court in January for the annual March for Life. This week North Dakota and Colorado struck down ballot measures restricting abortion, while Tennessee passed an initiative that may result in restricted rights.
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A fireball goes up at the site of an oil train derailment in Casselton, N.D., in this Dec. 30 photo. The fiery crash left an ominous cloud over the town and led some residents to evacuate.