Professor Ian Reifowitz, writing in The New Republic (subscription required), argues that the religious right and radical multiculturalists have something in common. He tells of a tale of two Pennsylvania cities:

Over the past year, two very different cities in Pennsylvania have added new requirements to their respective public high school curricula. Last October, Dover required that ninth grade biology students learn that "intelligent design"..., as well as evolution, may explain the development of species over time. ... In Philadelphia the school board voted in early June to require that all students take a yearlong course in African and African-American history. ...

Despite the apparent differences on the surface between the decisions taken by these two Pennsylvania school boards, they share a similar logic. The proponents of each justify its new requirement because it reflects (and by extension reinforces) the culture or religion of one particular group that happens to be the majority community in its school district. The decisions exemplify the parallels between the theocratic Christian right and radical multiculturalism, both of which reject the notion that Americans form a pluralistic yet unified nation. The Christian right is anti-pluralist; radical multiculturalism is hyper-pluralist.

This seems to be another instantiation of the extreme left-extreme right convergence, or if you prefer: the religious right borrowing tactics from the multiculturalist left.

Related: The Turning of the Tide