Star Trek: Deep Space Nine 4x4 "Hippocratic Oath"

the conflict between O’Brien and Bashir is excellent.
Also it is sad that Julian couldn’t save the Jem’hadar

The writers saw the B-story of this episode as an important indication of how DS9’s Worf was going to be different from TNG’s Worf. As Ronald D. Moore explains, “He used to be a cop, more or less, on the USS Enterprise-D, but it’s not going to be like that anymore. We wanted to keep emphasizing, ‘this is not TNG. The station doesn’t work like the Enterprise. Worf is going to have some troubles fitting in, but he’s going to learn.’”

and here we have the learning happening…

I am so frustrated that that terrible twilight fanfic monstrosity has appropriated the “shades of grey” terminology in pop culture. gah.

“you didn’t have to. you had a choice”
there’s always a choice