It's customary when lifting something wholesale from somewhere else, even an anonymous source you received in your email, to indicate this.
The way one does this is by depressing the Shift key and then striking the key next to the Enter key, thus: " ". Not to indicate that one is quoting someone else is intellectual theft, even when the intellectual content of the material is negligible.
Robin Williams did not write this. It was written by someone who wants the United States to become some kind of a cross between a spoiled child who will only play if he gets to make all the rules, and a giant concentration camp.