Derek Lowe and his Iranian-born wife were appalled by the violence that came in the wake of Iran’s disputed presidential election, and by the Tehran government’s attempts to censor news of the upheavals. And so they joined the protest, as best they could from their home in Acton. They decided to become members of the legion of Internet activists fighting the Iranian government’s aggressive attempts at post-election censorship. Armed with their computers and Internet access, they are helping Iranian protesters get the words and images out of their country for the world to see.