It's been nearly a year since the beginning of a bloody uprising in Syria that has taken thousands of lives, both military and civilian. Just how many? Depends on whom you ask.
A trustworthy death toll is needed, to place the conflict in context, and document the crisis for present and future reckoning. But accounting for the dead has been difficult, due to a lock-tight government crackdown, ongoing violence and even political ideology. A collection of volunteer groups is trying to bring clarity to the conflict, however. By combining social media and crowdsourced data with automation and algorithms, Syrian casualty trackers are moving toward the realm of activist data mining.