How many more are out there? I always draw a geopolitical lesson from this stuff. Sadaam Hussein and his sons were just a group of BTK killers who were allowed to take over a whole country. This point is not even a stretch when you know they personally slaughtered people, including in sexual crimes. That's why it's so ludicrous when the liberals pull this "can't we all just get along?" routine. No, there are lots of really sick people and in some countries they can rise to absolute power.
Do you remember an old Twilight Zone episode with Dennis Hopper in it? He portrayed a Hitler wannabe and was failing until the "real" Hitler showed up "to show him the way". Long story short, Hopper's character was finally killed and the "real" Hitler moved on to spread his slime another day. That's how these monsters thrive. After the BTK P O S is killed, there will be another one that'll crawl out from under a rock to spread misery. And the hell of it is, it won't end until we are all dead and gone, or until the Second coming, whichever comes first.