How would aliens with the goal of destroying all forms of art and culture attack Earth?
So I've got a powerful alien faction known as the Incinerators. Their goal is to destroy all civilizations in the Milky Way that have art and culture. Earth is their next target.
Premise:
FTL travel in my setting uses hyperspace jump points, the only jump point in the Solar System is located at the Sun-Earth L4 Lagrange point. So after the aliens arrived, they would have to use STL propulsion to reach Earth.
The main goal of the Incinerators is to destroy humanity's art and culture, enslave the entirety of the human race(or destroy humanity if necessary), and use the resources in the Solar System to expand their army, continuing their conquest.