Opinion: What 9/11 tells us about unifying America

On the 20th anniversary of 9/11, we mourn the terrible loss of life that irrevocably changed the course of this country. For everyone who lived through that day and its aftermath — and for younger Americans who have learned about what happened in the years since — the tragedy will never be forgotten.

On the 20th anniversary of 9/11, we mourn the terrible loss of life that irrevocably changed the course of this country. For everyone who lived through that day and its aftermath — and for younger Americans who have learned about what happened in the years since — the tragedy will never be forgotten.