CEO Jack Dorsey: Twitter absolutely does not censor users

10 years ago, Twitter CEO Jack Dorsey sent the first-ever tweet, writing "Just setting up my Twitter." A decade later, the social network has exploded in popularity, with millions of users tweeting and numerous historic moments documented. TODAY's Matt Lauer speaks to Dorsey about the history of Twitter, it's role in our future, and whether he's ever blocked a Twitter user.