Tragedy at SXSW should not leave a permanent scar on festival

March 14, 2014 06:34 PM

UPDATED March 14, 2014 06:35 PM

More Videos

  • 'Our world has been turned upside down'

    Dallas police officer Patrick Zamarripa's mother, Valerie, relives the night her son was killed. (video by Jared L. Christopher)