When Donald Trump began to         block      a growing number of Americans from    seeing his tweets, the Knight First Amendment Institute shot    back. The organization     warned      the President in June that the Twitter    account is a public forum, and that excluding citizens    (novelist Stephen King is among those         blocked )    violates the Constitution.  
    The argument is novel and     not    every legal    scholar thinks it will succeed. But whatever the outcome, the    dispute over Trump's tweets reflects how free speech fights are        changing      in the digital age. Today, many of the    legal battles turn on technology, surveillance and who should    control powerful communications platforms, like         Facebook      and Twitter.   
    Fortune     spoke to the Knight Institute's first director,     Jameel Jaffer     , and staff    attorney, Alex Abdo     , to learn    more about free speech flash pointsand how they intend to    stand up for the First Amendment in the time of Trump.      
    Free Speech on Facebook's Public    Square  
    Jaffer is an affable, ardent    40-something with a sparkling legal resume: Harvard Law Review,    clerk to the Chief Justice of Canada and, most recently, deputy    legal director of the ACLU. Now, he has the biggest job of his    life leading the Knight Institute.  
    The goal of the center, which opened    this year as a $60 million joint initiative of the Knight    Foundation and Columbia University, is to defend free speech    through research, lawsuits and education. It will pay close    attention to technology.  
    New technology has transformed the    landscape. A lot what used to take place in the public square    now takes place on proprietary networks," Jaffer says, pointing    to the influence of Facebook and other social media companies    on politics.  
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    Today, these companies have more    influence than traditional news outlets. Yet they are less    willing to take up the torch when it comes to fighting for the    First Amendment in court. Unlike the newspapers that foughtand    wonmany landmark First Amendment cases at the Supreme Court in    the 1970s and 80s, tech firms are absent from many big free    speech fights.  
    What's more, Jaffer worries the likes    of Twitter and Facebook possess too much power over what people    can hear and say in the first place. And when it comes to    challenging them, it's an uphill legal fight since they are         private companies     , which are    not subject to the First Amendment.  
    But that doesnt mean its not a free    speech issue. Its probably the most important free speech    issue of our agethe power of social media companies over the    speech we are allowed to hear, says Jaffer.       
    This why controversies like the one    over Donald Trump blocking citizens from seeing his tweets are    so important. They involve traditional free speech concernsthe    President could never block people from seeing a government web    siteand new social media technology.   
    In July, following another social media    rant by the President, the Knight Institute's case that social    media is subject to the First Amendment got a little stronger:      
    Speech in the age of    Surveillance  
    While social media companies control    over public discourse is a major threat to free speech, its    hardly the Institute's only concern. Another worry is creeping    surveillance technology and the government's ability to obtain    enormous amounts of informationincluding our location right    from the devices in our pockets.  
    Jaffer fears that increased ability of    governments to spy produces a chilling effect. If people know    their phones can be tracked, or their contents seized and    extracted, they may be less willing to speak freely or    criticize the government.  
    Meanwhile, even as the government    expands its surveillance powers, it is getting more adapt at    using laws to silence journalism and cover up its own    activities.  
    According to Abdo, the staff attorney    at the Knight Institute, the Justice Department has been    particularly aggressive in invoking the Espionage Age to    threaten reporters. In doing so, he says, it is using unproven    legal theories to undermine the ability of journalists to talk    to sources and conduct important reporting.  
    No court has decided how broadly that    statute reaches or if it reaches as broadly as the government    says it does, and if it violates the First Amendment, says    Abdo.  
    In response, the Knight Amendment    intends to advance the legal cause of whistleblowers.    Specifically, Abdo says it will make a case that the First    Amendment offers a shield for journalists and others who reveal    information in the public interest.  
    Jaffer adds that the Institute will    also focus on so-called structural litigation, which aims to    reform government practices that stymie free speech and access    to documents.  
    One such example is the growing number    of current and former government workers who are subject to    security clearance, which bars them from speaking without prior    permission. The restraints may be sensible in the context of    sensitive intelligence or military operations. But today more    than 5 million Americansmany of whom possess little in the way    of classified informationare subject to this censorship.       
    Its the largest system of prior    restraints still in place in the United States. We think its    unconstitutional, says Jaffer.  
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Fighting for Free Speech in the Age of Trump and Twitter - Fortune