Here's a simple thought. How about concerning yourselves with getting your own house in order instead of demonstrating false righteousness.
I take it not many of today's worldly people have the ability to understand the parable, especially in light of Jesus choice to address the simplistic life of ancient people in day-to-day examples with which they could relate.
"Science can purify religion from error and superstition; religion can purify science from idolatry and false absolutes. Each can draw the other into a wider world, a world in which both can flourish.... We need each other to be what we must be, what we are called to be." ~Pope John Paul II