Former President Donald Trump could outright end American democracy if elected to a second term, historian Jon Meacham warned on MSNBC Thursday. This comes amid extensive reporting on Trump’s allies’ plans to reshape the government to give the next GOP president far greater power and an army of loyalists in the civil service — and Trump’s own vow to be a dictator on day one of his presidency. “Jon, how much of the question as you pose it this coming year will turn on what people believe to be true?” asked anchor Ari Melber. POLL: Should Trump be allowed to run for office? “You know, he went on…