Celebrations for America’s 250th begin amid heat and political division

 (Nathan Howard/Reuters)

Despite sweltering heat, heavy security and brewing protests, thousands were expected to descend on the nation’s capital for the historic anniversary.

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See how Americans are celebrating the nation’s 250th anniversary

 (Ken Cedeno/Reuters)

Fireworks, parades and celebrations in photos from around the country.

By Washington Post staff

Is America celebrating the wrong anniversary? John Adams thought so.

George Washington helped forge the nation. Photos show how his spirit endures.