The objection that the iconoclasts had to a painting such as this one is that the image promotes worship of Mary over God.
Based on the image, it would seem that Mary is far more important in Christian religion according to what she looks like, and where she is sitting, and that baby Jesus is not as relevant as she is. Iconoclasts were a group of people who wanted to destroy religious icons anyways.
They had to endure criticism and hatred for being monotheistic during a time of paganism. it was seen as mutiny to the Roman Republic which had to keep its constituents "in line"
Yes the scripture does state that so it is true. (I have my bible with me all the time)
The student protesters would often use nonviolent techniques, similar to the sit ins and marches that were prevalent during the civil rights movements. There is your answer :)
