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.
YMMV: Hard Boiled
Complete Monster: Johnny Wong tops John Woo's other villains in terms of sheer nastiness. He has absolutely no qualms in blowing away innocent bystanders who are unfortunate enough to get in his way, as shown during the very first shootout of the movie. He only gets worse from there, culminating in the hospital sequence where he kills patients for trying to escape the hospital, takes a room hostage, and fires on the SWAT team even as they try to evacuate the babies of the hospital's maternity ward. Johnny's most despicable act is firing his Uzi into a crowd of patients standing between him and Alan, and then killing his Dragon Mad Dog when he blasts the gun out of his hands. The following quote by Johnny during the hospital sequence says it all.
Johnny Wong: There is no room for failure now. The innocent must die!
Moral Event Horizon: Johnny Wong crossed the line when he orders his men to kill the patients being evacuated from the hospital, and even takes a Mini-Uzi to a group of them standing between him and Alan.
The Woobie: Tony Leung Chiu-Wai is good at playing the Woobie, and his character Alan is no exception. Torn between a quite likeable crime boss, a horrible arms dealer, and his own fellow cops, it's not hard to feel for the poor guy.