Songfacts®:

• Many fans have queried if the title track of Blood In, Blood Out refers to the firing of vocalist Rob Dukes during the recording of the album and his replacement by previous frontman Steve "Zetro" Souza.
  
  However, guitarist Gary Holt told Billboard magazine the song has nothing to do with Dukes leaving the band. "A lot of people asked if [the song] had anything to do with Rob being replaced in the band, but as convenient as that sounds, the title, the lyrics, they were all there when Rob was recording it," said Holt with a laugh. "I hate to disappoint them on that one. It wasn't autobiographical."
• The disc's title was inspired by Holt's television viewing. "When I was working on the record, I was sitting around watching TV series like Gangland and all these locked-up prison reality shows," said Holt. "And I thought, 'Yeah, that's like Exodus.' It's a brotherhood. You bleed to get in, you bleed to get out."
• The song's music video was directed by Shan Dan Horan, who is Vice President of Operations at Artery Recordings. The clip features hundreds of dedicated Bay Area Exodus fans moshing and brawling to the tune. "Directing this music video has been a pleasure. Having the task to find hundreds of metal heads to fill up a dark room with very limited time seemed like a tough task," said Horan. "What I found however, was an overwhelming response from some of the most positive and energetic fans I've ever met. I feel honored to have played a small role in that."
  
  "Old metalheads, young ones, to even a guy that showed up in his wheelchair," he added. "The fact of the matter is everyone was accepted and everyone picked up their brethren when they would fall in the pit. To me that's what 'Blood In, Blood Out' is about. While we all come from different backgrounds – once a metal head, always a metal head. That's something that stays in your blood."