Over the past few weeks, a number of anguished friends and acquaintances, and even some strangers, have got in touch with me to ask what they might do to oppose Donald Trump. Being a fellow sufferer from OATS—Obsessing About Trump Syndrome—my first instinct has been to tell people to get off social media and take a long walk. It won't do anybody much good, except possibly Trump, if large numbers of people who voted against him send themselves mad by constantly reading about him, cursing him, and recirculating his latest outrages.

But, of course, taking a mental-health break is only a first step toward preserving the Republic. As a daily columnist, I see my role as trying to analyze and critique the Trump program, while also trying to understand some of the phenomena that allowed him to blag his way to the verge of the White House. But for those who want to take a more direct approach, here are some suggestions, starting with something you can do immediately:

**1. Go to change.org and join the 4.9 million people who have signed a petition calling on members of the Electoral College to reject Trump. **Then contact the electors for your state directly and tell them your concerns. On Monday, the five hundred and thirty eight electors will choose a new President. According to the Harvard law professor Lawrence Lessig, between twenty and thirty Republican electors are ready to vote against Trump. To deny him a majority, the number would need to reach thirty-seven. Most observers think that won't happen, and, even if it did, the task of electing a President would pass to the Republican-dominated House of Representatives, which would almost certainly vote for Trump. But a big protest vote in the Electoral College could still have great deal of symbolic importance.

A central part of the self-serving Trump narrative is that he won an electoral landslide. That is nonsense, of course. He got about forty-six per cent of the vote, he carried several states by less than one per cent, and Hillary Clinton won the popular vote by 2.7 million votes. But how to manifest these figures? There is no modern precedent for a large-scale revolt against a President-elect in the Electoral College. If one emerges this time, it will send a powerful message to the world that a majority of Americans don't want Trump as their President.

**2. Attend the Women's March on Washington, which will take place on Saturday, January 21st. **What better way to demonstrate the scale of the opposition to Trump than to stage a huge protest on his new doorstep the very day after his Inauguration? On Thursday, the Washington, D.C., police department confirmed that it has issued a permit for the march, which will start at Independence Avenue and Third Street Southwest, right in front of the Capitol. From there, the demonstrators will march west along Independence Avenue, which is on the southern edge of the National Mall. Despite the fact that the marchers won't be allowed near the Lincoln Memorial, which the National Park Service has cordoned off at the request of the Trump Inauguration committee, they will be clearly visible from the White House.

On Thursday afternoon, a hundred and forty seven thousand people had indicated on Facebook that they intend to be there, but the actual numbers could be much larger. And, despite the name of the march, it is definitely not restricted to people with two X chromosomes. According to its organizers, "any person, regardless of gender or gender identity, who believes women’s rights are human rights" is welcome to attend. Effectively, the march is an opportunity for anybody who opposes Trump to get out there and be heard.

**3. Contribute to organizations that will oppose Trump and the Republican agenda. **In the wake of Trump's victory on November 8th, a number of well-known liberal groups, such as the American Civil Liberties Union, the Anti-Defamation League, the Sierra Club, and Planned Parenthood, reported that they had seen a surge in donations and volunteers. That was encouraging news for opponents of Trump, but it was only a start. Given his illiberal instincts, the nature of his Cabinet picks, and the scale of the Republican Party's ambitions in rolling back the welfare and regulatory state, the battle ahead is likely to be long and bitter, waged on local, regional, and national fronts.

In this contest of words and wills, all sorts of different groups will be in need of financial support, from national organizations such as the Council on American-Islamic Relations to the political-action funds of the labor unions that will be targeted by Republican governors and their corporate allies to local groups of lawyers trying to help undocumented immigrants who could be targeted for deportation. You can find lists of organizations opposed to Trump here, here, and here.

**4. Support independent journalism.**Trump is clearly obsessed with the media, and for good reason. Like all skilled propagandists, he knows that journalists represent a potential threat to him and his shameless efforts to traduce the truth. With his popular social-media feeds, and the support of an upstart right-wing press, he has found a way to go around the mainstream media and, when he deems necessary, to confront it head on. But, for all the power of Twitter, fake news, and the social-media echo chamber, real news can still break through all the noise.

Witness the past week's revelations in the Washington Post and the New York Times about Russian efforts to interfere in the American election. For once, Trump was put on the defensive. For months, he has claimed that nobody knows who carried out the hacks of the Democratic National Committee and other targets: at one point, he suggested it could have been a "four-hundred-pound guy" lying in bed. Last weekend, he called a C.I.A. assessment that Moscow had tried to help him win the election "ridiculous."

But this week Trump was powerless to prevent leading Republicans, including John McCain and Mitch McConnell, from calling for congressional hearings on the extent and origins of the Russian cyberattacks. Many Presidents in the past have come to fear getting caught inside the Bermuda triangle of prying journalists, official leakers, and congressional committees. But for the oversight process to work there needs to be a thriving and independent press.

**5. Get engaged on a personal level. **Giving money is one thing, but making a donation to help someone else oppose Trump is no substitute for individual and collective mobilization. In any liberal democracy, the ultimate guardian of decency and civil liberties is an active civil society, which can push back against efforts to mislead the public, flout accepted norms, and centralize power. That's why, usually, one of the first thing that would-be autocrats do when they take power is attack civil society.

But what is civil society? In addition to big national organizations, such as labor unions, the A.C.L.U., and the N.A.A.C.P., civil society comprises countless local groups, including charities, environmental activists, church groups, think tanks, reading groups, peace campaigners, parents' associations, and youth groups. It encompasses any group that mediates between the individual, the government, and the market, and whose goal is promoting the common good. The thing to do is to pick an organization that reflects your personal interests or an issue that motivates you, get involved, and stick with it.