From left Irish President Michael D. Higgins, his wife, Sabina Coyne and and his shamrock-capped military aide, Col. Pat Herbert watches passing performers at St. Patrick's Day parade in Dublin, ... more 
From left Irish President Michael D. Higgins, his wife, Sabina Coyne and and his shamrock-capped military aide, Col. Pat Herbert watches passing performers at St. Patrick's Day parade in Dublin, Saturday, March 17, 2012. Police estimate half-million spectators lined the route of the parade, the biggest of more than 50 across Ireland. (AP Photo/Shawn Pogatchnik) less 
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Associated Press | Photo By Shawn Pogatchnik
Sat, Mar 17, 2012 3:15 PM EDT