Abortion Opponents Rally March in Washington, D.C. [Getty Images]

Pro-Life marchers participate in the 'March for Life.' Tens of thousands of Pro-Life supporters rallied in Washington, D.C. on the anniversary of the landmark 1973 Supreme Court decision Roe v. Wade, demanding an end to legal abortion in the United States. (Photo by Albin Lohr-Jones / Pacific Press) (Photo by Pacific Press/Corbis via Getty Images)

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