Tens of thousands of pro-lifers filled the grounds near the Washington Monument and marched up Constitution Avenue to the US Supreme Court on Friday.

This year’s March for Life - which takes place on or near January 22 to mark the U.S. Supreme Court's 1973 decisions in Roe vs Wade and Doe vs Bolton that legalised abortion virtually on demand – was the first time a vice president had attended the rally, with one of the first speakers being Vice President Mike Pence.

Pence, who has marched at the event before as a participant and addressed it as a congressman, told the crowd that "life is winning" and assured them the Trump administration was behind them.