It's times like these that remind me of my very favorite Bill Buckley quote: "That is like saying that the man who pushes a little old lady into the path of a bus is morally equivalent to the man who pushes her out of its path, because they both push little old ladies around."

I may disagree with the guy in many ways, but that's a fine quote.

For a while there was an internet game going around where you would give a deliberately vague and ambiguous description, then use it to imply similarity for the sake of invoking cognitive dissonance in the reader. For example, "A small group of rag-tag rebels strike at the empire that brought war to them, bringing down a mighty symbol of that empire. Am I describing Star Wars Episode 4, or the 9/11 attacks?". When done for humor sake, these can be rather amusing.

abstractbarista's comment is a political attack along the same lines. By drawing an equivalence between the phrases "white power" and "black power", there is the implicit statement that the two are morally equivalent, which is by no means the case. They then follow-up by saying that since the two are equivalent, they should be treated the same. It's a bait and switch, where the syntactic similarity is used to imply semantic similarity where no such semantic similarity exists.