I don’t know if this will mean that we have stepped back from the abyss, but it’s at least a tiny positive sign: For the better part of a decade, Donald J. Trump and his allies at Fox News have beguiled some Americans and enraged others as they spun up an alternative world where elections turned on fraud, one political party oppressed another, and one man stood against his detractors to carry his version of truth to an adoring electorate. Then this week, on two consecutive days, the former president and the highest-rated cable news channel were delivered a dose of reality by the American legal system. On Thursday, Mr. Trump became the first former president in history to be indicted on criminal charges, after a Manhattan grand jury’s examination of hush money paid to a pornographic film actress in the final days of the 2016 election. The next day, a judge in Delaware Superior Court concluded that Fox hosts and guests had repeatedly made false claims about voting machines and their supposed role in a fictitious plot to steal the 2020 election, and that Dominion Voting Systems’ $1.6 billion defamation lawsuit against the network should go to trial. Both defendants dispute the claims. Still, the back-to-back blows against twin titans of American politics landed as a reminder of the still-unfolding reckoning with the tumult of the Trump presidency. For the left, the seismic week delivered an “I told you so” years in the making. Democrats who have long wanted…