Both the Russian Revolution and the Irish Easter Rising provided a catalyst for renewed peace activism in Scotland, including the work of the WPC. The 1917 annual May Day celebration in Glasgow Green brought together 70,000 people. Women peace activists, including Barbour, Dollan and Mary Burns Laird, were prominent among the speakers. This type of activity inspired the re-launch of the Women's Peace Crusade in July 1917, on Glasgow Green with 10,000 people taking part. Other branches of the WPC were then established throughout Scotland, England and South Wales. Their campaign continued until the end of World War I.