We all know that on St. Patrick's Day, everybody's Irish. But this rings especially true for the kids of Keltic Dreams, an Irish dance troupe from PS 59 in the Bronx, featured in today's New York Times. When Dublin-born music teacher Caroline Duggan's mostly black and Hispanic students started asking questions about her funny accent and Riverdance poster, she started teaching them about Irish culture, and step dancing. Soon, dozens of her seven- to......