TWITTER is heard around the world

The images captured by cell phones and camcorders can be powerful and captivating. All people anywhere in the world are able to report, share and influence what happens. Digital electronic communication has clearly changed everything.

Chaos prevailed as protesters and police clashed in the Iranian capital.

"RIP NEDA, The World cries seeing your last breath, you didn't die in vain. We remember you." That post on Twitter came from a man who identified himself as an American guitarist in Nashville, Tennessee.

Amid the hundreds of images and videos of Saturday's brutal crackdown on protesters in Iran that flooded the Internet, it was the graphic video showing the death of a young woman that touched a nerve among those following the events in Tehran for more than a week.