Planned protests against the Trump administration that are expected to be among the largest since the president’s second term began will be held across the country on Saturday.

The demonstrations will occur in all 50 states, and organizers have estimated that there will be roughly 2,000 of them — ranging from small groups in more rural communities to larger rallies in major cities including New York, Philadelphia, Chicago, Atlanta, Dallas and Denver. According to a map provided by organizers, there are some three dozen events scheduled in Indiana alone. Protests are also scheduled in other countries including Britain, Mexico and Germany.

They come as President Trump’s immigration crackdown and decision to deploy the military in Los Angeles have already led to large-scale protests there and additional protests in several other cities.

On the same day as the protests, Mr. Trump has scheduled a military parade in Washington for the Army’s 250th anniversary, which also coincides with his 79th birthday.

Here’s what we know about the protests.

Who’s behind the protests?

The demonstrations, organized under the slogan “No Kings,” have been arranged by a number of groups that overlap with the coalition that pulled together the “Hands Off!” demonstrations on April 5 and other recent large protests against the president.

Organizers include Indivisible, the American Civil Liberties Union and 50501. Some of these groups organized protests during Mr. Trump’s first term over abortion rights and gun violence. The “Hands Off!” protests in April focused on the message that the president was threatening health care, education and Social Security.