Chilling video evidence on the first day of Donald Trump's second impeachment trial, showing his frenzied supporters smashing their way into the US Capitol, revived a national trauma.

CNN's Chris Cuomo takes a closer look at former President Trump's legal team's argument on the first day of his second impeachment trial.

CNN's Anderson Cooper speaks with conservative attorney George Conway about the performance of former President Trump's lawyers during the first day of his second impeachment trial in the Senate.

The first day of the Senate impeachment trial of Donald Trump was a perfect microcosm of the country's partisan divide and what's at stake in a post-Trump America. On one side are dedicated lawmakers trying to cobble a broken nation back together, taking their roles seriously and clearly acting with heavy hearts in the wake of a violent insurrection. On the other are those who believe these hearings are not in their party's interests, and are willing, again, to put party over country while they demand that a fractured democracy move on without tending to its wounds.

The second impeachment trial of Donald Trump got underway on Tuesday with arguments about whether the US Senate has jurisdiction to try the former president now that he has left office. Most legal scholars, regardless of political ideology, believe it does. But impeachment is a political rather than a legal process, so a debate and vote on the issue took up the first day of the trial.

The first day of President Donald Trump's second impeachment trial was nominally about the constitutionality of holding an impeachment trial for a former president.

Now that Donald Trump and his defenders have failed (again) to persuade the Senate that an ex-president cannot be impeached, the trial of the former president will begin in earnest. The House managers who foreshadowed their opening argument on Tuesday and will present it in full on Wednesday and Thursday have the best of the facts and the law. But can they solve the political problem of wooing 17 GOP senators to get to the two-thirds majority of the Senate necessary for conviction?

The second impeachment trial of President Donald J. Trump is underway. It is only the fourth impeachment trial in US history, and the first time a president has been tried after leaving office -- as well as for a second time.