联邦当局调查国家广场上巨大的“8647”标记 - NBC新闻

Federal authorities investigate giant ‘8647’ markings on National Mall - NBC News

Federal authorities investigate giant ‘8647’ markings on National Mall NBC News Grass on the National Mall Is Vandalized With ‘86 47’ Stains The New York Times Large etchings of numbers signaling opposition to Trump appear on National Mall The Washington Post '8647' shows up on National Mall lawn. What do numbers mean? Detroit Free Press Huge ‘8647’ etched into grass on the National Mall, aerial images show CNN

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