Sometimes, it’s hard to believe it really happened. I live in a hilly rural area in central New York. I look out my window. The sun is shining. The apple tree in front of my house still stands. Birds still fly. But somewhere, down the hill, maybe above the homes of neighbors I barely know, there is a cloud, a cloud I can only see out of the corners of my eyes. The cloud gets darker each time I listen to or read political news.

When I first moved here more than 40 years ago, my wife and I, and the group of people we moved here with, were the Hippie-radicals. We bought the land our neighbors and their gun club enjoyed as a hunting area. Maybe they thought we came here to deny them their freedom to hunt wherever they chose. There were tense moments when we had to escort armed hunters off our land. There was even a time we were threatened with being shot. Many people of color and LGBT people unfortunately know this threat much more intimately than I do.

But there was a movement then, a base of support. I would have been more frightened if I was alone. And there were increasingly good moments with the neighbors over the years. For example, once my wife and I got caught in a snowdrift and a woman down the road helped pull us out. And now, we know each other and are good neighbors if not friends. And this is what I hope can happen now, a movement of the majority of Americans. By majority I don’t just mean the 50% of the electorate who voted for Hillary, but those who would have voted for Bernie or just didn’t trust the system at all.

Mr. Trump uses his own form of terrorism, one we have seen too often in history. Acts of terror are carried out to spread fear through a populace and lead a country, especially a country claiming to be democratic, into a frightening double-bind. Anger and fear can lead a people to call for measures of revenge and protection: violent revenge not only against the specific people who carried out the attack but the religion, culture and anyone who even looks like the people who gave it life. Protection can include all kinds of measures to defend against further attacks. But as we learned from Edward Snowden and subsequent revelations, protection and revenge can lead to over-reaction and the destruction of the rights and liberties necessary to keep democracy alive. To protect democracy, we end democracy. That is terrorism’s goal. That might be Mr. Trump’s goal.

To eliminate the inhumanity that is ISIL requires studying and untangling the massively tangled web of beliefs, suffering and oppression that gave birth to it. To eliminate the threat that the new President represents requires the same. One aspect of ISIL is the absolute belief in the rightness of its ideology as well as its mission to destroy anyone who gets in its way or has different ideas. Mr. Trump calls for locking up or suing anyone who opposes him.

Spread enough fear and you can break the ties that bind us together. It can provoke people to hold on too tightly to their ideas of how things must be, degrade the value and examination of truth, and lose sight of the humanity of others. Society is held together by the most precarious of ties. It is not just buildings and institutions, but relationships, ideas, empathy and dreams. Mr. Trump spreads such fears.

Of course, his rhetoric has softened after the election. We don’t yet know exactly what he will do and must listen carefully to what he and other Republicans propose. But we also know that anyone who has spoken as he did in the election is not to be trusted. Even if, as some claim, his words were a tactic to gain power, such a means to power exposes, to some degree, his ends.

Fighting the ideas of Mr. Trump means not becoming who or what we oppose. To quote Gandhi: “You must be the change you wish to see in the world.” It is too tempting to yell and assign blame, to hold too righteously to anger as our identity, and thus become like Mr. Trump. As many people have said, those of us who abhor terror and the politics of fear must fight not only against hatred but for democracy, for the rights, equity, humanity, and compassion that should characterize a government and are our best weapons against the terrorist ideology of Mr. Trump—or ISIL, for that matter.

One strategy we might use is for each of us to create a small, caring group dedicated to deepening our own education, developing mental and emotional awareness, and committing ourselves to act when necessary—it would help us all to find balance and limit the reach of our fears. Such groups can take the work seriously and also support us in playing and finding beauty in the world. We need to think as clearly as we can, and the greatest aid to clear thinking is energetic commitment to a deep examination of issues, combined with kindness and joy in being together, in being alive. Much of the news is depressing but that doesn’t mean we need to deny our selves or our friends joy.

So, I hope we find a way to improve the way we care for, support and educate each other, and not let fear drive us apart.

*Also: For some hope, read this article on student responses to the election of Mr. Trump.