As the choices for president become clearer, people ask me if there are any circumstances under which I could support Donald Trump. The answer is a clear and unequivocal no.

It’s not that I disagree with him on nearly every major issue, though I do. His specific refusal to reform entitlements, combined with his proposals to increase spending, threatens to bankrupt the nation. His anti-trade position would take us back to the days of Smoot-Hawley. He supports eminent domain abuse and corporate welfare. He backed TARP and the bank bailout. And I could go on and on. But as a libertarian, I don’t ever expect to find a candidate I agree with on everything. Hell, I didn’t agree with Rand Paul on everything. I certainly don’t agree with Hillary Clinton on, well, anything. For me, voting is almost always choosing the lesser of evils.

And it’s not his fundamental dishonesty, both as a candidate and a businessman. If I’ve learned one thing in Washington, it’s that politicians lie. Besides, Hillary Clinton has turned lying into a high art form. She lies even when the truth is perfectly fine — just for practice. Compared to her, Trump is an amateur liar.

It’s not even his temperament, though I find his bullying and name calling to be absurdly juvenile. He is thin skinned, and tolerates no dissent. His trademarks are braggadocio and loud shouting. He thinks that leadership is jumping in front of the mob and giving them whatever they want. That’s not exactly the sort of person I want with the nuclear codes. But to speak of an egotistical thin skinned politician is practically redundant. And, while Hillary may be more cold-blooded, she is no less wedded to her own lust for power. And vengeance? Thy name is Clinton.

Rather, I oppose Trump because I believe he is truly dangerous for the American experiment. This is a man who casually promises to commit war crimes. This is a man who wants to rewrite libel laws so he can sue journalists who write negative stories about him. This is a man who has tolerated if not encouraged violence by his followers. After a protester was beaten up at his event, he said that “maybe he should have been roughed up. What he was doing was disgusting.” He said of another protester, “I want to punch him in the face.” He praised Putin and said the Chinese “almost blew it” in Tienanmen Square, but finally “showed strength.” Scary stuff.

Most importantly, the man has consistently tolerated and encouraged outright bigotry. In fairness, politicians cannot be held responsible for every action of their followers. And politics often means associating with unsavory characters. Ted Cruz shared a stage with a preacher who says gays should be put to death. Barack Obama hung out with Bill Ayers and Jeremiah Wright. But Trump goes far beyond the usual necessities of politics.

He could barely bring himself to denounce David Duke and the KKK. (Aside from his wink and nod with Jake Tapper, consider his routine “I repudiate” of the Klan, with the 15 minutes he spends trashing, say, Vicente Fox.) He routinely re-tweets memes from white nationalist groups, and has tolerated their presence in his campaign. His misogynistic comments about women are legend. He mocks and denigrates Muslims, Mexicans, the disabled, and others. This is not about not being politically correct; this is about playing with evil.

In some ways the left is suffering from too often crying wolf. Almost any opposition to President Obama has been denounced as racist. We live in an era of “microaggressions.” But this time the wolf is here.

To support Trump is to give voice and legitimacy to the darkest and most repressive forces in America. That can never be allowed. For that reason, I say #NeverTrump.