If there's one thing that comics love doing, it's killing off their characters. Fake deaths, secret deaths, permanent deaths - all can be found in the pages of some series or another, varying from entirely overdramatic, to uncomfortably realistic.
Among this cavalcade of suffering, there's one surprisingly consistent theme for comic book deaths, as it's frequently a trend for comics to get rid of characters who are disliked by the audience by killing them off - often as brutally as possible, as they know that fans will be clamouring to see a figure they hate get offed in a savage way. While Jason Todd is perhaps the most infamous example of this, there are countless examples of heroes being thrown to the wayside because they didn't quite garner fan support.
While this is often used to generate sympathy for an otherwise unloved character, it's just as easily used to get rid of the proverbial trash, as the simplest way to explain why a character is no longer in a series is to show them being stone-cold murdered.
Though they're not always entirely warranted, seeing hated characters be killed off is always interesting - even if it's for all the wrong reasons.