Corrected entry: When Blade is rescuing Karen from the hospital, the police mistakenly believe he is kidnapping her and proceed to open fire on him while he is carrying her, and then again when he jumps to the rooftop across the street. Police officers would not fire freely at a suspect when his supposed hostage is in such close proximity due to the obvious risk of accidentally shooting the hostage.
Phaneron
26th Jun 2012
Blade (1998)
Correction: And Whistler even mentions to Karen that the vampires "own the police."
Correction: Blade mentions later to Karen that the vampires own "half of downtown" and we also see that at least one cop is a familiar. So it's not unlikely that the cops in the hospital are also familiars and know who Blade is, and therefore have little regard for any "hostage" of his.