Rioting at the Carlisle Circus the night before PPI-NI programming.
Police clash with protestors during a third night of sectarian rioting in the Carlisle Circus area in Belfast, Northern Ireland on September 4, 2012. The trouble first erupted on Sunday when loyalists from the Protestant community attempted to disrupt a march by Catholic republicans. AFP PHOTO/ PETER MUHLY (Photo credit should read PETER MUHLY/AFP/GettyImages)
