The video - The Tunnel Warfare, is produced based on the shooting of The Tunnel Warfare model in Beijing Military Museum.

这段视频是根据北京军事博物馆的《地道战》模型，拍摄编辑制作的。

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We don't know whether it was a coincidence or somehow related to the alleged shooter's plans, but a new play about the consequences of bigotry, called "Anne and Emmett" had been set to premiere at the museum the night of the shooting.

NPR: The Tipping Point: When Hate Turns To Violence

We're going to spend some time today talking about the shooting at the Holocaust Memorial Museum in Washington, D.

NPR: The Tipping Point: When Hate Turns To Violence