In Irish mythology, a púca is a mischievous, shapeshifting spirit that can take the form of a horse and entice unwary travellers on to its back for a wild ride. Aidan Harte knows how that feels. Eighteen months ago the sculptor was commissioned to create a 2-metre tall bronze statue of a púca for the town square in Ennistymon, County Clare. What followed was a headlong gallop into a surreal controversy about the role of public art in Ireland that only now, perhaps, is coming to an end. Along the way Harte found himself trolled on social media, pilloried from the pulpit, championed by celebrities and credited as the unwitting…