1.) Saying that SPLC wrongly categorizes "people and groups" is obviously vague. I don't mean to sound mocking but, honestly, I'm asking for specific things SPLC has said that you find disagreeable.

2.) You did provide links, but none to specific claims. All of your links go back to the FBI delisting (see 4) or ad hominem attacks against the founder. What Dees did or did not do is irrelevant right now - what I'm asking for are specific claims. You still have provided none.

3.) Your links were obvious ad hominem attacks from spurious sources. The opinion piece in the Federalist likely does not count but the blog you cited is terrible. It's only source of information was a Breitbart article. The author's site is replete with conspiracy theories about the Illuminati. If you looked at and read that, then thought it was legitimate: I'm sorry.

4.) The FBI de listing has nothing to do with specific claims.

5.) Again, please, cite something specific.