You already know the generalization approach: "These things never...," "I always...," etc. With deletions, the critic simply omits inconvenient data points, and the distortion approach simply twists what has been said to fit the argument.
The value in a book, article or even a simple blog post isn't in finding magical solutions that work all by themselves; rather, the value lies in the possibility that you might start thinking about what you can actually do.
There are some things none of us will ever do, like flying by flapping our arms. These truly do belong to the "I can't" realm. But what about those things that we declare outside our capability simply because we declare that we can't?
The key to creating change at any level you might wish is to start by looking in the mirror and asking yourself one simple question: "What can I do to make a difference that requires no one's permission other than my own?"
The next time you are faced with a problem, reframe that problem as a puzzle. Puzzles have solutions and that problem you are holding onto right now just might contain a key piece to the whole puzzle coming together.
Dr. King's actions serve as a reminder that no matter the situation or the odds, there are still steps you can take to make a difference, to find a way to overcome what's in the way, to work around the numerous obstacles.