These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Anvilicious: The awfulness in the systematic discrimination and rounding up of the hemophages is hammered on in one particular scene where a family of hemophages is seen dressed up as Hasidic Jews, complete with biohazard patches.
Big Lipped Alligator Moment: The Blood Chinois. They are a random Asian gang that randomly appear in the movie, have no apparent motive and backstory besides "You're in our territory", set up a ridiculous action scene, and they are mentioned precisely one later when Nerva's goons try to intimidate Violet by reminding her they aren't Blood Chinois, as if we knew enough about them to use them as a gauge of strength.
Body Horror: In Episode 2, a girl who had her back completely and utterly broken in a motorcycle accident is turned into a vampire. There is a bloodchilling shot from behind in which you see her back is still broken, even as a vampire.
Fanon: There's a belief among some fans (and on the packaging of some DVDs) that the central characters' unnamed organisation is called the CIB. This is a misunderstanding of dialogue in the first episode, in which their cover story to the police is that they're working for the Complaints Investigation Bureau, which at the time in real life was the name of the Metropolitan Police's Internal Affairs unit.
Squick: A vampire accidentally runs down a young woman and breaks her spine in multiple places, paralysing her for life. He then turns her into a vampire so she can walk again. She's still wearing her hospital gown when she confronts Michael, and her back is exposed. The pieces of her spine are visibly misaligned under her skin, and every time she moves there are clicking sounds as the bones grind together.