So, part two of your answer would be?
Using the history of arrest information provided by news outlets worldwide, I would submit to you that a guess-temated 90% of those charged deserved everything they got!
Unethical behavior, carelessness and sheer bloody stupidity led to their demise, in my opinion.
The other 10%, tough luck, mate. You trusted the wrong person, said the wrong thing!
There are criminals out there who have evaded capture for decades only to be caught and publicly exposed only after doing something mind-bogingly dumb!
And then there are genuine zoophiles who maintain a love affair with their significant other for a lifetime without a soul knowing about it. (Except maybe other close zoos)