Massive toddler rape ring busted

Sometimes Homeland Security completely does the right thing, as in these two determined officers who tracked down a child porn ring that specialized in raping toddlers. It all started with a photo of an abused 18 month boy holding a stuffed rabbit and wearing a sweater and led across several nations wth many going to prison

How do the officers handling this case remain sane, starting into the face of degraded evil every day?