A new installation covers 20 acres of federal park land near the Washington Monument with hundreds of thousands of white flags, and visitors have come from all over to walk among them, reflect and mourn.
Do you know what this piece memorializes? If so, what do you think of the installation and its message? How else might the United States, or other nations, memorialize this crisis?
Tell us in the comments, then read the related article to learn more.
Students 13 and older in the United States and the United Kingdom, and 16 and older elsewhere, are invited to comment. All comments are moderated by the Learning Network staff, but please keep in mind that once your comment is accepted, it will be made public.