How can one use technology to help oppressed people regain their voice?

Nairobi's premier university is under siege as the country tries to come to terms with the death of two students on campus. http://utafitini.com/home/post/1760/university-of-nairobi-students-killed-following-theft-allegations

Some quarters say the dead students were thieves who were caught stealing a laptop and mob justice was mete on them while others say the two students were killed by gangs for yet to be known reasons.

How can developer/s best leverage technology to give people who have become passive participants their voice back to fight for their rights?