12 () posted 3 years ago by TheImpossible1 3 years ago by TheImpossible1 +12 / -0 58 comments share 58 comments share save hide report block hide replies
As I understand it, a serial killer kills his victims... serially, a few at a time, and can continue on undetected.
A mass shooter targets a crowded place, kills his victims in parallel, and almost always gets caught as a result.