Mr. Raskin and other managers declined to speak about strategy, but current and former officials familiar with the confidential preparations agreed to discuss them anonymously. The prosecutors’ almost complete silence in the run-up to the trial has been another departure from the strategy of Mr. Trump’s first impeachment, when Democrats set up a sizable communications war room in the Capitol and saturated the cable television airwaves in an all-out battle against Mr. Trump in the court of public opinion…

At the center is footage of Mr. Trump, speaking outside the White House hours before the mob overtook the police and invaded the Capitol building. The managers’ pretrial brief suggests they are planning to juxtapose footage of Mr. Trump urging his supporters to “fight like hell” and march to the Capitol and confront Congress with videos posted from members of the crowd who can be heard processing his words in real time…

But the proximity could also create complications. Several people familiar with the preparations said the managers were wary of saying anything that might implicate Republican lawmakers who echoed or entertained the president’s baseless claims of election fraud. To have any chance of making an effective case, the managers believe, they must make clear it is Mr. Trump who is on trial, not his party.