In a person episode, a hologram satisfies B'Elanna and notes that inspite of being half-Klingon, she isn't violent, and he always considered Klingons were violent. She tells him that the belief that Klingons are violent is a stereotype. There are by no means any individuals in civilian garments strolling in the corridors (unless they're coming directly from the holodeck) like you'd from time to time see in TNG.