Northern Ireland’s most prominent anti-abortion activist was convicted Wednesday of harassing the director of Belfast’s only abortion clinic in the latest chapter of a bitter two-year confrontation. Bernadette Smyth, leader of the Precious Life group, was convicted on two counts of threatening Dawn Purvis, who runs British family planning service Marie Stopes’ Belfast branch. It is the only such clinic on the island of Ireland, where abortion is legal only in extreme cases where a woman’s life is deemed at risk from her pregnancy. …