DENVER, CO. - MARCH 14: Kari Tae of the Optimist Club explains his work to a group of youths as he cleans up after the horses in the Annual St.Patricks day parade in Denver, CO March 14, 2015. More than 200,000 people were expected to attend the parade that features over 200 entries and 10,000 marchers. (Photo By Craig F. Walker / The Denver Post)
