I think judgment is called for, and I don't understand the bible verse as you cite and how it applies to this example. Consider instead an example of someone judging the evidence and acting upon it: http://www.npr.org/templates/story/story.php?storyId=100829394 I read that and I don't see someone turning away and justifying their non-involvement by saying that the bible says do not judge. 

Personally, I try to live non-judgmentally but perhaps more judgment is indeed called for in many cases.