DESPAIR IS WORSE after hope is briefly ignited. I don’t know about you, but I was elated earlier this spring, when it seemed as if Donald Trump and COVID-19 were gone, and Joe Biden appeared to be getting the nation rapidly back on track.

Now, much is sliding backwards. It’s not Biden’s fault. It’s Trump’s ongoing legacy.

The new delta strain of the virus requires, according to the Centers for Disease Control and Prevention (CDC), that we go back to wearing masks inside in public places where the virus is surging, even if we’re fully inoculated.

This would be little more than a small disappointment and inconvenience were it not for Republicans using it as another opportunity to politicize public health.

House Minority Leader Kevin McCarthy responded to the new CDC recommendation with the kind of unhinged hyperbole Trumpers have perfected. “The threat of bringing masks back is not a decision based on science, but a decision conjured up by liberal government officials who want to continue to live in a perpetual pandemic state,” he tweeted.

Republican politicizing of public health will get worse if the delta variant continues to surge. At some point, vaccines will have to be mandated because being inoculated is not solely a matter of personal choice. Herd immunity is a common good. If infections mount, that common good can only be achieved if nearly everyone is vaccinated.

But those eager to exploit the virus’s resurgence, the “know nothings,” Trump wannabes, vilely ambitious political “upcomers,” Tucker Carlsons and similarly cynical entertainers, are already howling about personal freedom threatened by socialism.

The investigation into the attack on the U.S. Capitol Jan. 6 is further evidence of how far the Republican Party has descended into opportunistic treachery.

We need to know what happened and why, if we are to have half a chance of avoiding a repeat. Just as with the history of systemic discrimination and brutality against Black people in America, which Republicans are calling critical race theory and trying to ban from classrooms, the truth shapes our responses to the future.

Here again, the dispiriting aspect of the present moment is Republican denial and obfuscation.

As Officer Michael Fanone, who suffered traumatic brain injury Jan. 6 when rioters attacked him, testified at the start of the hearings “What makes the struggle harder and more painful is to know so many of my fellow citizens, including so many of the people I put my life at risk to defend, are downplaying or outright denying what happened.”

With the exception of Rep. Liz Cheney, whom I never expected to hold up as a model of integrity, Republicans are eager to divert the public’s attention. House Republican Conference Chairwoman Elise Stefanik declared at a press conference that “Nancy Pelosi bears responsibility, as speaker of the House, for the tragedy that occurred Jan. 6.”

This is absurd on its face. The speaker of the House shares responsibility for Capitol security with the Senate majority leader who, at the time of the attack, was Mitch McConnell. If Pelosi was negligent and there’s zero evidence she was, McConnell was as well.

Stefanik and other Republican leaders don’t want the public to know about Republican members of Congress who were almost certainly involved in the travesty, either directly or indirectly. The list includes Reps. Jim Jordan, Mo Brooks, Paul Gosar, Matt Gaetz, Marjorie Taylor Greene, Lauren Boebert, Andrew Biggs and McCarthy himself. Sen. Josh Hawley also seems to have been in the know, given his fist salute to the rioters.

And then, there’s Trump himself, cheerleader and ringleader.

All should be subpoenaed. All, presumably, will fight the subpoenas in court.

Meanwhile, Trump continues to fulminate as he did at a recent rally in Phoenix, Ariz., where he declared “Our nation is up against the most sinister forces. This nation does not belong to them, this nation belongs to you.”

Wrong. America belongs to all of us. And we all have a responsibility to protect its public health and democratic institutions.

The real sinister force is the Trump Republicans’ cynical exploitation of lies and anti-scientific rubbish to divide and divert us. Even with Trump gone from the White House, Republicans continue to tell lies that were a hallmark of his presidency.

Months ago, it seemed as if this darkness was behind us. It is not.

Former U.S. Secretary of Labor Robert Reich is Professor of Public Policy at the University of California at Berkeley. His book “The System: Who Rigged It, How We Fix It” is available.