It's obviously Trump who is far scarier in every way imaginable. Hillary isn't necessarily no change, like others say. She's not a great Democrat, she symbolizes how the Party has gone astray. Libertarians and Greens will get very low numbers, as usual.
Obama's years were not bad. He's one of the more open, intelligent Presidents, and every time he compromised he hurt someone's ego. America would be fine under Hillary. It may not get better. It may not get worse. But she's capable to run a country, and she'd give the Supreme Court enough liberals to secure ideological dominance for decades. She's not Bernie Sanders. She does not offer ideas. And yet, she'd be a competent President with a decent team and room to navigate.
Donald Trump is a historic disaster. Anyone who believes otherwise has fallen prey to his sick antics. America was founded to withstand stupidity, and yet he would test it in a way very, very few Presidents have. Do you really want him standing off against China in the South Pacific? Would he not take that situation and turn it into a chance to bolster his "legacy"? Executive power gives him the opportunity to influence such an event. What if when he takes away Obamacare, the system is completely bled dry because more people lose care than can afford to get new private plans? What if when the Supreme Court is filled with Christians who do not believe in women's rights and think a "dead document" is grounds to make the USA more of a surveillance state than it already is? Would Donald Trump not offend other world leaders, especially during sensitive UK/European times? Would he not enrage Mexicans who depend on living in the USA, and the actual state who views him as an unfit trading partner? Do you want a President who claims to speak for the people and yet wants to help people like himself get more money, make more deals, and pay less to the government he'd serve? Is it more dangerous to elect someone who would look at reforms and rights and respect their validity, or someone who has no concept of civic responsibility, a man so complicated with ego that his every move is either a lie or a proud boast? Is he not the more dangerous one.
Progressive media also won't say this: a vote for Jill Stein or Gary Johnson is a vote for Trump. It would be a vote to splinter the left at a time when they need to get a Democratic majority. If they do not and Trump wins, the entire Congress will have swung overwhelmingly Republican. With Hillary, Bernie would have a voice in Congress, should Democrats win both the House and the Senate. With Republicans, NO progressive bills EVER get even considered. Either you vote against Trump, or for him. There is no other way this election.