This is a classic example of why this type of information should just be forwarded to the authorities. Last thing we need is a mob mentality going after someone who may turn up to be innocent; it's happened before, and it can happen again.
They aren't really the mob - they are the actual pros who do this all the time. Presumably they aren't going to go and lynch someone because a random tipster emailed them a blurry photo.
Not to mention that official law enforcement has governance in place to at least try to make sure they don't go and lynch someone on a hunch. It might not be perfect, but it's better than the alternatives.
