ORLANDO, Fla. — Jabbing at the press and poking the eye of the political establishment he ran against in 2016, President Donald Trump officially kicked off his reelection campaign Tuesday with a grievance-filled Florida rally that focused more on settling scores than laying out his agenda for a second term. Addressing a crowd of thousands at the Amway Center in Orlando, Florida, Trump complained he had been “under assault from the very first day” of his presidency by a “fake news media” and “illegal witch hunt” that had tried to keep him and his supporters down. And he painted a disturbing picture of what life would look like if he loses in 2020, accusing his critics of “un-American conduct” and telling the crowd that Democrats “want to destroy you and they want to destroy our country as we know it.” The apocalyptic language and finger-pointing made clear that Trump’s 2020 campaign will probably look a whole lot like his improbably successful run three years ago.