Book excerpt: Alexandria Ocasio-Cortez may seem like she came from nowhere, but the movement that propelled her to office - and to global political stardom - has been building for 30 years. We've Got People is the story of that movement, which first exploded into public view with the largely forgotten presidential run of the Rev. Jesse Jackson, a campaign that came dangerously close to winning. With the party and the nation at a crossroads, this timely and original book offers new insight into how we've gotten where we are - and where we're headed.