<p>The Occupy Wall Street protests have inspired similar events around America, and in dozens of countries. Here, a truck has been painted with a sign supporting the Occupy Portland protests in Oregon.</p>
Credit Don Ryan / AP
After more than 30 days, the Occupy Wall Street movement has evolved from a protest in New York City into a growing international movement. And it all started in July, as a single blog post inspired by the Arab Spring.
Here's a look at significant developments in the Occupy Wall Street timeline, as the movement gathered momentum and spread to other U.S. cities.
<p>Afghanistan's Panjwai district, southwest of Kandahar city, was a Taliban stronghold until the U.S. troop surge in 2010 began to displace the insurgents. </p>
Credit Allauddin Khan / AP
Villagers from a violent part of southern Afghanistan say that Afghan troops, along with several American mentors, forced civilians to march ahead of soldiers on roads where the Taliban were believed to have planted bombs and landmines.
No one was hurt. But if the allegations are true, the act would appear to violate the Geneva Conventions governing the treatment of civilians. The episode also raises questions about how civilians are caught between the two sides in the war.
<p>Former Massachusetts Gov. Mitt Romney (left) and Texas Gov. Rick Perry got into a heated exchange about immigration during Tuesday's GOP presidential debate in Las Vegas. </p>
Credit Ethan Miller / Getty Images
<p>In 2008, the primary battle between then-Sens. Barack Obama and Hillary Clinton dragged on for months. Above, supporters of Obama and Clinton hold signs outside a polling place in January 2008 in Nashua, N.H.</p>
Tuesday night's brawl of a debate in Las Vegas erased any doubt that the fight for the Republican presidential nomination would get bitter. Texas Gov. Rick Perry aggressively parried former Massachusetts Gov. Mitt Romney, who looked rattled for the first time.
If that hand-to-hand combat continues, the Republican primary could just become a long, drawn-out fight. Whether that's a good thing or a bad thing for the eventual nominee is unclear.
<p>An onlooker takes a photograph of Occupy Wall Street protesters in New York's Zuccotti Park. The demonstrations were inspired by a blog post by Kalle Lasn, editor of <em>Adbusters</em> magazine.</p>
Credit Stan Honda / AFP/Getty Images
The protests go by a variety of names: "Occupy Wall Street," "American Autumn," "The 99 Percent." And the lack of a unified message is matched by a lack of centralized control. But the protests share a common spark: a disillusioned Canadian adman.
The "Occupy" protests seemed to come out of nowhere. But the early participants, like John Garcia, in downtown Seattle, point to a very specific catalyst.
"I get Adbusters, so that's how I heard about it," he says.
<p>Janna Beth Hunt, a first-grade teacher at Nashville's Norman Binkley Elementary, is disappointed with how she scored on her first observation under the new system.</p>
Credit Blake Farmer for NPR
Tennessee overhauled its teacher evaluation system last yearto win a grant from the federal Race to the Top program. Now many teachers say they are struggling to shine, and that's torpedoing morale.
For Janna Beth Hunt, who teaches first grade at Norman Binkley Elementary in Nashville, it's been a disappointing process. Tennessee's new observations grade teachers on a scale of 1 to 5. Many are scoring what feels like a C, which under the system isn't enough to get the job security of tenure.