Why is Mary Crying?

In California, at Vietnamese Catholic Martyrs Church, a statue of Mary appears to be crying.

These cases are always interesting, and of course the Diocese is skeptical at first.
A parishioner thinks it is a sign of something to come. I don't know. This matter of course is not binding on anyone's faith.

Regardless of the authenticity of the tears, we should be renewed in our honor of Mary. She is afterall the Queen of Heaven. She is our greatest interecessor. She delivers prayers to her Son for our sake. (She started his ministry off! Cana anyone?) I think we can all have a little more Marian devotion in our lives. I of course am not saying one has to pray the rosary daily. I don't. We can all start by saying a Hail Mary and asking for her intercession, asking her to pray for us and all of the people of the world.

But why is Mary Crying? Jack Chick thinks he knows. ( He's wrong, though. )