Donald Trump responds to protesters on Twitter

WASHINGTON - President-elect Donald Trump is back on Twitter, taking on the protesters who have gathered in cities across the nation since his election.
    
Trump tweets: "Just had a very open and successful presidential election. Now professional protesters, incited by the media, are protesting. Very unfair!"<blockquote class="twitter-tweet" data-lang="en"><p lang="en" dir="ltr">Just had a very open and successful presidential election. No