'History is watching: Dan Rather on Facebook rips Donald Trump's veiled assassination threat against Hillary Clinton. No trying-to-be objective and fair journalist, no citizen who cares about the country and its future can ignore what Donald Trump said today. When he suggested that 'The Second Amendment People' can stop Hillary Clinton he crossed a line with dangerous potential. By any objective analysis, this is a new low and unprecedented in the history of American presidential politics. This is no longer about policy, civility, decency or even temperament. This is a direct threat of violence against a political rival. It is not just against the norms of American politics, it raises a serious question of whether it is against the law. '