JUDY WOODRUFF: But first: From Syria to Ukraine to Iraq, a window on the modern battlefield is a click away, across the Internet.
But now there are concerns that some video evidence from those potential crime scenes could be endangered.
Hari Sreenivasan has that from New York.
HARI SREENIVASAN: Recently, YouTube took down hundreds of thousands of videos posted to its Web site, many from the Syrian War.
YouTube, which is owned by Google, used an automatic system designed to flag violent and...