Quite possibly the most used cry against Catholicism. This stance is highly effective in both turning away inquirers about the Church and pulling away Catholics to other denominations. The problem is that this statement is thrown around by uninformed Protestants who have not read one sentence in the Cathecism concerning Mary. Feel free to look for yourselves. You will never find an official teaching of the Catholic Church that says that Mary is to be worshiped.
Honor is taught, and honor is nowhere close to worship.
God alone is to be worshiped. Catholics place Mary on the same level as Jesus. Closely related to the myth above. The Catholic Church has never taught that Mary is even close to being on the same level as Jesus. The Church will be the first to stop such error as Jesus and Mary being equal.