With the 750,000 registered sex offenders in the U.S., the thousands more unaccounted for, and even the thousands more who've never been caught, know that predators live amongst us.
The question always arises as to whether or not a sex offender can be rehabilitated. I'm sure that a handful of Level 1s and 2s can be, but once a predator, always a predator. It's their nature. It's their normal.
There are a bunch of free sites you can go to that will let you know the current living situations and general whereabouts of registered sex offenders in your town. Take advantage of every opportunity you can to learn where the bad guys are.
Know how to fight. Know how to defend yourself from a predator. Understand all the vulnerable points of the human body and what parts of your body can be used as weapons. Go for the eyes, nose, throat, groin, and instep of the foot. Know how to fight from the ground, if attacked from behind, or when a distraction is used in front.
Determine if you want to carry a weapon, but know that your brain is your best defensive weapon. Carry a weapon if you're properly trained, and not a day before. Years ago, my childhood hero was a Chicago cop named J.J. Bittenbinder. He would say, "If all else fails, let them kiss you, then bite down on their lips until your teeth meet."
Complacency can result in bad things happening. Install a home security system, be vigilant, be alert, be aware, and know your options.