航拍图像显示，国家广场草地上刻着巨大的“8647” - CNN

Huge ‘8647’ etched into grass on the National Mall, aerial images show - CNN

Huge ‘8647’ etched into grass on the National Mall, aerial images show CNN Police investigate '8647' written in grass on US national mall BBC Markings that appear to show the numbers "86 47" seen on National Mall in Washington CBS News Enormous etchings of numbers interpreted as threat to Trump appear on National Mall The Washington Post US authorities investigate huge '8647' marking on grounds of National Mall in Washington Reuters

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