In the 70's and 80's serial killers were all the rage. People made famous by killing many others, but not in one big mass shooting but one at a time over years until finally being caught. I've noticed though in the 2000's that we haven't had any. Lots of mass murders, but no Ted Bundys or John Wayne Gacies anymore. They used to even give them awesome nicknames. Boston Strangler, Zodiac Killer, BTK, Son of Sam and my favorite, The Cleveland Torso Murderer. You would think with the "Look at me" generation that there'd be more of these type of guys but there isn't.
Your
favorite: The Cleveland Torso Murderer -- LOL!

I'm sure there are still serial killers lurking about, but to really garner attention these days, killing folks piecemeal isn't enough to grab the headlines. Instead, mass killers have to run into schools and other undefended areas and start bombing or shooting the place up. Those fuck-ups KNOW they'll go down in history, plus they get immediate gratification through the media -- something the serial killers from decades past didn't really have. Moreover, since we have a lot more media these days with the Internet, the effect is magnified. If someone didn't read the newspaper much or watch TV in the 70s, it's conceivable they wouldn't really know who the Zodiac Killer was. Fast-forward back to today, and I bet even the dumbest guy you could find would know about those Columbine kids.