In Christianity, faithful people are associated with sheep and the unfaithful with goats. Goats have horns and use them offensively and aggressively. Satan and satanism are therefore replete with symbols regarding goats.
Mat 25:31 ¶ When the Son of man shall come in his glory, and all the holy angels with him, then shall he sit upon the throne of his glory:
Mat 25:32 And before him shall be gathered all nations: and he shall separate them one from another, as a shepherd divideth [his] sheep from the goats:
Mat 25:33 And he shall set the sheep on his right hand, but the goats on the left.
Mat 25:34 Then shall the King say unto them on his right hand, Come, ye blessed of my Father, inherit the kingdom prepared for you from the foundation of the world:
Mat 25:41 Then shall he say also unto them on the left hand, Depart from me, ye cursed, into everlasting fire, prepared for the devil and his angels: