Iran Protests Defy Internet Blackout, "Massacre" Alleged

New protests erupted in Iran overnight. Demonstrators faced an internet shutdown and a severe police crackdown. Human rights groups warned on Sunday that authorities are committing a "massacre" to end the unrest. The protests are now in their third week. They began over economic issues but have transformed. The movement now directly challenges Iran's theocratic government, in power since 1979.