 Complete the following phrase:  Tufekci stresses throughout that online spaces and social media are an important public sphere and not simply virtual extensions of peoples lives. She asserts that pre- and post-internet movements cannot be judged by the same criteria. The internet has given protesters the power to gather and scale quickly: the 1963 March on Washington drew hundreds of thousands and was the result of many months of planning in a multi-year effort, while massive crowds during the 