DAVID HARSANYI: America needs a new Red Scare.

Even a few years ago, accusing a Democrat of Marxist leanings would have sparked great indignation. Today? Democrats campaign with Piker. Once-respected institutions invite him to pontificate on history. Leading progressive media outlets such as Pod Save America and The Bulwark treat him as a normal political operative, never grilling him on his support for an ideology that’s put tens of millions of people into the ground.

Many more elected Democrats have welcomed Hasan-style “democratic socialists” — the preferred euphemism of modern communists — into their “big tent” than criticized them.

They do so because polls find young people increasingly prefer the red-green alliance of Islamist and communists to anything resembling traditional American political coalitions. Theoretically, at least, they prefer collectivism to markets. They prefer protest and “action” to debate and governing. They prefer violent theocratic regimes such as Hamas to free capitalistic nations such as Israel. The Overton Window is in warp drive.

When President Donald Trump stood at Mount Rushmore on the eve of the nation’s 250th anniversary, delivering an unapologetically patriotic speech, he threw in a few words to denounce this rise of communism as “a mortal threat to American liberty.”

This greatly offended many in the media.

Of course it did — the media largely agrees with the commies.