As another poster noted, $16 per month is no big deal.  

Even if all it does is keep a couple hundred dangerous people in jail until trial, it's a cheap price to pay for that result.

I'm willing to pay that much each  month to reduce the odds of multiple rapes.  Or reduce the odds of multiple armed robberies.  Or reduce the odds of  multiple serious assaults.  

There are no guarantees, of course.  You're just reducing the odds.