I started to look around to see if there might be another contemporary ethos that has replaced the cool ethos. You could say the hipster ethos you find in, say, Brooklyn qualifies. But that strikes me as less of a cultural movement and more of a consumer aesthetic.
A better candidate is the “woke” ethos. The modern concept of woke began, as far as anybody can tell, with a 2008 song by Erykah Badu. The woke mentality became prominent in 2012 and 2013 with the Trayvon Martin case and the rise of Black Lives Matter. Embrace it or not, B.L.M. is the most complete social movement in America today, as a communal, intellectual, moral and political force.
The woke mentality has since been embraced on the populist right, by the conservative “normals” who are disgusted with what they see as the thorough corruption of the Republican and Democratic establishments. See Kurt Schlichter’s Townhall essay “We Must Elect Senator Kid Rock” as an example of right-wing wokedness.
To be woke is to be radically aware and justifiably paranoid.