Wolves in Sheep's Clothing

One of the problems with 'wolves in sheep's clothing' is that, 

When they are shown a mirror

All they see is a sheep.

Very few people are fully aware of the evil they do, they are mainly following their feelings and programming.  The first person they deceive is themselves.

When a Pharisee (arrogant, judgemental religious leader) approached Christ in humility, He reasoned with them and taught them the error of their ways.  Otherwise, he just confronted them as one would an attacking wolf ("you hypocrites, brood of vipers", etc.).

I used to try to help everyone, thinking I could reason with all people, no matter how manipulative or bitter they were.  This is not the example Christ showed us.

Now I think, help people if they come for it; but only help them as you judge best, not necessarily as they want.  Otherwise, leave 'fools in their own foolishness'; unless they are harming others, in which case prepare to confront them head on.  This may not seem 'nice', but this is what Christ did; this is therefore love.