this appears to be the organization that put up the billboard
https://www.icna.org
https://www.icna.org/?s=dallas
https://www.reuters.com/article/us-northkorea-usa-threats/chilling-the-atmosphere-north-korea-media-condemns-u-s-democrats-ahead-of-summit-idUSKCN1QD0AM
Similar to how blondes tell jokes about Jussie, North Korea is now attack Democrats!
Dems cannot win!