Welcome to Washington's new media landscape

White House Correspondents' Dinner weekend has always been a reflection of the changing news ecosystem, but this year's event shows just how fast the media industry is being disrupted.Why it matters: Washington's traditional media power-brokers are being challenged by independent journalists and upstarts with a less complicated political history.Driving the news: Stretching from Thursday to Sunday, a dozen parties and events surrounding this year's dinner were thrown by startup news organization...