The Obamas have added to the angst with intimations of a new Puritanism in our dire future.
Positive thinking is Puritanism with a capitalist face, she believes.
1570s, from Puritan + -ism. Originally in reference to specific doctrines; from 1590s of excessive moral strictness generally. In this sense, famously defined by H.L. Mencken (1920) as "the haunting fear that someone, somewhere may be happy."