Emmylou Harris performed this in 2011. It struck me as appropriate given recent events.
NOTE: This post originally featured a televised studio version. It is no longer available. Below is a live rendition from record at a 2012 concert (Update September 11, 2013):
I am starting a series called “Hymns of Social Justice.” The series will feature social justice themed songs from a variety of artists. This is the first installment of that series.