"Free the Arctic 30" message in lights hangs between the masts of the Rainbow Warrior against the skyline of San Francisco as activists and campaigners from decades past gathered with current staff, crew and board members for a reunion on board the ship. At events at 265 cities in 43 countries thousands of people take part in a day of solidarity to mark two months since the Arctic 30 were detained following a peaceful protest against Arctic oil drilling on September 18, 2013.