They’re usually also Biblical literalists, who believe that their infallible God-authored Bible says the Earth is flat (“four corners”, covered in a dome, etc), thus the globe is an attack on Christianity. The worldly institutions are all controlled by the devil, who wants Christians to doubt their Bible and their belief in God.
It’s a reference to Toto’s song “Africa”, and in the line “I bless the rains down in Africa” the “A” gets extended a lot.