Six people, including P-D reporter, arrested at Carnahan meeting  —  UPDATE: St. Louis County police say six people were arrested.  Two of those were arrested on suspicion of assault, one of resisting arrest and three on suspicion of committing peace disturbances.  Carnahan was gone when the ruckus started.

First on the CNN Ticker: Florida senator to resign seat  —  WASHINGTON (CNN) - Sen. Mel Martinez, R-Florida, will announce that he is resigning his seat, three GOP sources tell CNN.  —  The sources said that Martinez will officially announce his intention to step down on Friday.

247,000 Jobs Lost in July; Rate Falls Slightly to 9.4%  —  The American economy lost 247,000 jobs in July, and in a reversal, the unemployment rate fell slightly, to 9.4 percent, the government reported Friday.  —  Although businesses are expected to keep cutting jobs through the rest of the year …

Taliban Leader in Pakistan Was Killed, His Aides Say  —  ISLAMABAD, Pakistan — Baitullah Mehsud, the main leader of Pakistan's fearsome Taliban militia, was killed Wednesday in a C.I.A. missile strike, two Taliban fighters said Friday, but a spokesman for Pakistan's military, Maj. Gen. Athar Abbas …

Sincerely, John Hughes  —  I was babysitting for my mom's friend Kathleen's daughter the night I wrote that first fan letter to John Hughes.  I can literally remember the yellow grid paper, the blue ball point pen and sitting alone in the dim light in the living room, the baby having gone to bed.

Gillibrand Rival Reportedly Won't Run in Primary  —  WASHINGTON — Representative Carolyn B. Maloney is expected to announce today that she has changed her mind and will not enter the primary race against Kirsten E. Gillibrand, New York's newly appointed senator.

Twitter, Facebook attack targeted one user  —  A Georgian blogger with accounts on Twitter, Facebook, LiveJournal, and Google's Blogger and YouTube was targeted in a denial-of-service attack that led to the sitewide outage at Twitter and problems at the other sites on Thursday, according to a Facebook executive.

Presenting new rules for radicals  —  If you're a virtuous and patriotic American, you may find this column either offensive or misleading.  If so, please forward it to White House authorities at the Department of Fishy Activity.  (E-mail the good people at flag@whitehouse.gov.)

Axelrod gives Dems their health talking points  —  Senate Democrats are girding themselves for a month of vigorous debate over healthcare reform, armed with a new set of talking points from David Axelrod, the president's chief political strategist.  —  Axelrod and Jim Messina …

How Many Parks Do You Need?  —  The District of Columbia has many, many, many fewer schoolchildren than it once did, so there's been a trend toward closing DCPS facilities and trying to reuse the sites for something else.  Office space for city agencies is a popular idea, but sometimes that doesn't work out for various reasons.