Slanderous impersonation of a person or organization is not inherently protected by freedom of speech. This is technically correct, but you're putting the cart

Slanderous impersonation of a person or organization is not inherently protected by freedom of speech. This is technically correct, but you're putting the cart before the horse. By definition, "slander" is basically an act of false attribution (or impersonation) that is clearly without merit (i.e. does not promote legitimate discourse) and causes egregious harm (to specific individuals). The Yes Men's video is clearly satire, and as such, is just as protected of a form of free speech in the U.S. as donning a mask of Trump or Clinton, standing atop a milk crate in Union Square, and "impersonating" those figures. Of course, Cloudfare apparently chose not to offer any "back" to the Yes Men once they got the nasty note from the NRA's legal people -- but that was just a business decision; it has no bearing on whether the content they were hosting was legally protected or not.