The events in American history named by Republicans and Democrats overlap substantially, and differences between the two parties are primarily a matter of degree.
Blacks are the only demographic group in which any other historic event challenges the prominence of Sept. 11 in importance.
Shared experiences define what it means to be an American. The Sept. 11, 2001, terrorist attacks were such a unifying event for modern Americans.
Each generation favors allowing gays and lesbians to marry to a greater degree than at any point this century.