On Monday, Philadelphia Student Union celebrated Martin Luther King's vision with a spirited rally outside the School District, a 600-person march down Broad Street, and a powerful service at Arch Street Methodist Church. Led by the young leaders of PSU, the event called for peace, justice and an end to all forms of violence. It was co-sponsored by 19 other organizations and attended by students, parents, teachers, and community members from every section of the city--as well as State Representative Vanessa Brown, Democratic candidate for Governor Joe Hoeffel, candidate for State Representative Will Mega, and Philadelphia District Attorney Seth Williams. There were so many inspiring speeches, songs and other moments--what made the biggest impression on you?