Solution to the Trevor Paglen "Weeping Angel" cipher

 

Numbers arround flag are ASCII in hexadecimal format:
43 49 41 20 7C 20 49 4F 43 20 7C 20 70 6E 69 72 67 72 20 6e 68 67 72 7a 20 6e 61 74 72 79 68 66 20 6e 71 20 73 79 72 67 68 7a 20 7c 20 41 69 20 50 6d 7a 69 20 6d 72 20 43 73 79 76 20 58 5a 20 7c 20 77 6c 6d 67 20 79 6f 72 6d 70 0d 0a 0d 0a

Equivalent ASCII characters:
CIA | IOC | pnirgr nhgrz natryhf nq syrghz | Ai Pmzi mr Csyv XZ | wlmg yormp

Apply ROT13 cipher to "pnirgr nhgrz natryhf nq syrghz" = "cavete autem angelus ad fletum"
translate from latin: "Beware of the angel weeping"

Apply ROT22 cipher to "Ai Pmzi mr Csyv XZ" = "We Live in Your TV"

Apply Affine (25,25) or Atbash Mirror Cipher to "wlmg yormp" = "don't blink"

 

CIA | IOC | Beware of the angel weeping | We Live in Your TV | don't blink