I believe the pertinent quote is this:
Blue-Collar Man: (paying for coffee) A roofer listens to this... (taps his heart) not his wallet.
What always bothered me about that dialogue was that this guy seemed so proud of getting his friend killed! If I knew the job was dangerous, and I could afford to pass it up, I would refer someone I thought deserved to be shot during a shingling... not a friend who was too desperate to pass up such an opportunity.
Not only that, Randall's supposition that all of the people in the FIRST Death Star were evil bothers me, too. Speaking on behalf of all bureaucratic cogs within defense industries, not everyone there was necessarily a supporter of Palpatine or his policies. I have no doubt there were Oscar Schindler types embedded there, subtly shielding alien species from the Emperor's genocidal exploits; I have no doubt there were plenty of logistics, planning, and technical staff who were trying to serve the greater good while eagerly watching the Coruscant caucuses, and hoping that someone less evil would end up with the Imperial nomination. (That Organa guy seems okay, but may not have enough experience; we just hope Governor Tarkin doesn't get through the primaries, because he creeps us out, and we aren't so sure about his dodgy religious views.)
Basically, no matter what government it is, in any government facility, there are always food services, facilities, and infrastructure contractors onsite who either have no idea what kind of evil they are enabling, or have no real choice: work here, or watch your family starve. It's a hard Empire, you know... not the rosy economic picture that the Decider... I mean Emperor... likes to paint.