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KNOW IT ALL: Friday's Top 8 Stories at NBC News

A look at the key headlines.
Image: A delegate clasps her hands together as she listens during the fourth and final night at the Democratic National Convention in Philadelphia
A delegate clasps her hands together as she listens during the fourth and final night.JIM YOUNG / Reuters

Good morning. Here are some of the headlines we're following this morning:

1. Clinton Favors Pragmatism Over Flair on Historic Night

There's nothing subversive about the former secretary of state, aside from her gender. So instead of reinventing the wheel, Hillary Clinton exceeded expectations when she accepted the Democratic nomination for president by being her best: Forceful and cogent in a masterfully executed speech. Read more in POLITICS.

2. Fact-Checking Clinton’s DNC Speech

So what did Hillary Clinton get wrong in her acceptance speech Thursday night — and what did she get right? Read more in POLITICS.

3. Trump: Democrats ‘Not Talking About Real World’

Donald Trump on Thursday dismissed the optimistic tone that Democrats have offered at their national convention, telling an enthusiastic Iowa crowd that "they're not talking about the real world." Read more in POLITICS.

4. Could Russian Hackers Spoil Election Day?

U.S. officials are alarmed that the Russian hack of Democratic Party emails has exposed vulnerabilities in the security of the electoral voting system that are big enough to compromise the credibility of the upcoming presidential election. Read more in INVESTIGATIONS.

5. One Cop Killed, 1 in Surgery After Shooting

A police officer was fatally shot and another seriously injured during a traffic stop in San Diego late Thursday, officials said. Police said early Friday that one person was in custody, but told residents to stay indoors while they searched the area for other potential suspects. Read more in NEWS.

6. Charge Dropped Against Accused Chandra Levy Killer

Federal prosecutors moved Thursday to drop the case against Ingmar Guandique, the man accused of murdering the federal government intern in 2001, "based on recent unforeseen developments." Read more in NEWS.

7. Cosby Drops Lawsuit Against Accused in Criminal Case

Bill Cosby has dropped a lawsuit that demanded the accuser in his criminal case repay the money from their confidential 2006 court settlement. The embattled comedian had sued her for breach of contract for speaking to police, who reopened the investigation into him last year. Read more in NEWS.

8. Cop Mistook Krispy Kreme Doughnut Glaze for Meth

An Orlando man who was arrested after police officers mistook Krispy Kreme doughnut glaze for crystal meth has been cleared. Read more at NBC MIAMI.