Well Barb you can believe in the Almighty God himself and know that whatever these people did to others God will make sure they are paid back in ten fold - whatever you shall do to others the same shall be done unto you.  It's karma as most call it - I call it the good ole God karma - you might not be able to enjoy watching what happens to them but you can rest assure it will happen in some way on some day.  I find remembering these promises that are made to us takes away a little of the anger that I just don't deserve to be feeling in the first place messing up my day.