User blog comment:FairyRaven/Fairy Tail Chapter 414: Drops of Fire, Review and Commentary/@comment-7418318-20150105133955/@comment-4829046-20150105152652

@Nick Guess it is to show that the system isn't perfect and repercussions for it will come into play eventually. It shouldn't be unheard of for the bereaved(regardless of which) to actually become killers.

This chapter addressed a cycle where the one who murdered out of revenge faced the same vengeance. Now they just need to make the cycle go a few more steps and maybe loop and and bingo, you got the recipe for public outcry.