"Anti-government protests have broken out in Egypt," the BBC writes, and the people in the streets have apparently drawn inspiration from recent events in Tunisia, where the authoritarian government was toppled following demonstrations.
"Egyptian police fired tear gas and used water cannons on protesters gathered in Cairo, calling for reforms and demanding the ouster of President Hosni Mubarak, Al Jazeera's correspondents reported.
"This comes after thousands of anti-government protesters, some hurling rocks and climbing atop an armored police truck, gathered in downtown Cairo on Tuesday in a Tunisia-inspired demonstration."
Storyful.com is collecting photos, videos and reports here. Here's one very quick clip:
On Twitter, search #jan25 for what's being said.
Update at 12:20 p.m. ET: Several live video feeds from Cairo have shown up on Ustream, including this one. Because it's dark there, the sound is the most compelling part of the feed right now. There's considerable chanting, whistling and other crowd noise.
Update at 10:50 a.m. ET. A short time ago, NPR's Soraya Sarhaddi Nelson spoke with Morning Edition host Steve Inskeep from Cairo. She had been watching the exchanges between police and protesters. She said "it's pretty spectacular" that police have allowed the protesters "quite a bit of freedom" — though she also did see them use some tear gas to break up the demonstrations.
"They're using that as their inspiration," Soraya said of the events in Tunisia and how they've affected the anti-corruption protesters in Egypt. Organizers hope it will be "an Egyptian people's effort," she also said.
We'll add the audio from their conversation as soon as possible.