The summary is fine. Pepe the Frog is a beloved meme, check. Pepe has been recently adopted by the far right, check. The only thing wrong is the headline, which can easily be misread as meaning the ADL has made a blanket "All uses of Pepe are examples of Hate".
The biggest thing that's wrong is... well, Slashdot's readers. Give them something you can easily misunderstand, and they'll launch half cocked, often with an interpretation even more stupid than the obvious misinterpretation.
And, BTW, to the OP of this thread: the ADL is one of the oldest surviving and famous groups that fights anti-semitism. It's hardly obscure, and a quick Google search would have given you the answer.