If you selectively put words in [brackets] and remove others without adding ellipses you can alter anything to have any meaning.

I for one read this and assumed RFK was just discussing gun control in general, only weeks before he was killed. Adding in the context the speech was regarding MLK gives it a whole different meaning. Still powerful, but different.

Attributing “The only thing we [experience] is fear itself” to FDR suggests he said something a little different. That FDR needs to see a therapist for his anxiety.