More: The officers' testimony was cited in at least five cases filed by the US Department of Justice amid the unrest. The justice department has charged at least 26 people with "assaulting" and "impeding" federal officers and other crimes during the protests over immigration raids. Prosecutors, however, have since been forced to dismiss at least eight of those felonies, many of them which relied on officers' inaccurate reports, court records show.
The justice department has also dismissed at least three felony assault cases it brought against Angelenos accused of interfering with arrests during recent immigration raids, the documents show.
The rapid felony dismissals are a major embarrassment for the Trump-appointed US attorney for southern California, Bill Essayli, and appeared to be the result of an unusual series of missteps by the justice department, former federal prosecutors said.
The Guardian's review of records found:
Out of nine "assault" and "impeding" felony cases the justice department filed immediately after the start of the protests and promoted by the attorney general, Pam Bondi, prosecutors dismissed seven of them soon after filing the charges.
In reports that led to the detention and prosecution of at least five demonstrators, Department of Homeland Security (DHS) agents made false statements about the sequence of events and misrepresented incidents captured on video.
One DHS agent accused a protester of shoving an officer, when footage appeared to show the opposite: the officer forcefully pushed the protester.
One indictment named the wrong defendant, a stunning error that has jeopardized one of the government's most high-profile cases.
"When I see felonies dismissed, that tells me either the federal officers have filed affidavits that are not truthful and that has been uncovered, or US attorneys reviewing the cases realize the evidence does not support the charges," said Cristine Soto DeBerry, a former California state prosecutor who is now director of Prosecutors Alliance Action, a criminal justice reform group.
She said officers often call for charges that prosecutors don't end up filing, but it was uncommon for the justice department to file, then dismiss cases, especially numerous felonies in rapid succession.
"It seems this is a way to detain people, hold them in custody, instill fear and discourage people from exercising their first amendment rights," DeBerry said.
More: There is the case of Greece, where the government faked deficit numbers for years, contributing to a debilitating debt crisis that required multiple rounds of bailouts. The country then criminally prosecuted the head of the statistical agency when he insisted on reporting the true figures, further eroding the country's international standing.
There is the case of China, where earlier this century the local authorities manipulated data to hit growth targets mandated by Beijing, forcing analysts and policymakers to turn to alternative measures to gauge the state of the country's economy.
Perhaps most famously, there is the case of Argentina, which in the 2000s and 2010s systematically understated inflation figures to such a degree that the international community eventually stopped relying on the government's data. That loss of faith drove up the country's borrowing costs, worsening a debt crisis that ultimately led to it defaulting on its international obligations.
It is too soon to know whether the United States is on a similar path. But economists and other experts said that Mr. Trump's decision on Friday to fire Erika McEntarfer, the Senate-confirmed head of the Bureau of Labor Statistics, was a troubling step in that direction.
Janet L. Yellen, the former Treasury secretary and chair of the Federal Reserve, said the firing was not what is expected from the most advanced economy in the world.
"This is the kind of thing you would only expect to see in a banana republic," Ms. Yellen said.