The general gist of this prophecy, the way I understand it, is that the Washington Monument (and possibly others) will fall and/or be destroyed, and in doing so it will signal the end and fall of the Globalists, the Deep State, and all of their operations. So this prophecy is about a sign that will signal the fulfilling of other things that were prophesied elsewhere, rather than just a specific event. So it's kind of a prophecy of a prophecy in a sense. IE, this prophecy speaks of that prophecy (ie, the sign) that speaks of yet another event. The full details of "how and when" haven't been given as of yet, but the "what" has been, and the details about the actual event itself are interesting.
(*Do you have a better description, or did you find an error? Please let me know.