Who is the "wild boar" in the vineyard and what is the pope saying

Answer: The pope alluded to this statement by Martin Luther.

Explanation:

This is how the pope metaphor addressed Martin Luther. Pope Leo X issued a papal proclamation in which he compared this Christian reformer to an animal because of the actions of Martin Luther.

The pope wrote in his announcement that the wild beast was treading on the vineyard of the church and was trying to destroy it. In this statement, the pope meant Luther but also all his followers.