Internet has become a way of life. But, just like the market it needs some regulation to make sure it is not used by rogue elements for their benefit. The difficult question is where to draw the line.
It might be tempting to simply have a high bar and not fret about all these possibilities—terrorists are terrorists, after all. But a high bar can easily interfere with legitimate users in the name of counterterrorism. Facebook, for example, took down the iconic and disturbing image of a naked Vietnamese girl fleeing after a napalm attack on the grounds that images of naked girls are, well, child pornography. (After an outcry, Facebook restored the image.) Likewise, a high bar on encryption might prevent terrorists from communicating securely with one another, but it could also prevent human rights dissidents from doing the same.