An American flag recovered from the World Trade Center site. (Spencer Platt/Getty Images)

I didn’t cry on Sept. 11, 2001. I didn’t cry as candlelight vigils swept over New York in the days that followed. I didn’t cry as I watched the MSNBC rebroadcast every year of the “Today” show from that murderous day. It was my way of paying tribute to those lost that day. Today, watching the dedication of the National September 11 Memorial Museum, the tears didn’t stop flowing. Something about the speeches, the photos, the videos — the horror and heroism they recounted — flipped a switch. The mourning that escaped me 13 years ago caught up with me today. And I am oh so grateful.

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Jonathan Capehart is a member of the Post editorial board and writes about politics and social issues for the PostPartisan blog.