How do i get the required required response

I am expecting the facebook comment from this URL

http://ift.tt/2jb8nKU

But getting this error message

{
   "error": {
      "message": "An access token is required to request this resource.",
      "type": "OAuthException",
      "code": 104,
      "fbtrace_id": "ABZp42kZtrD"
   }
}