Book excerpt: the Civil Rights Act of 1964

From The Age of Entitlement: America Since the Sixties by Christopher Caldwell:

The Civil Rights Act of 1964 was, as we have noted, a legislative repeal of the First Amendment’s implied right to freedom of association. Over decades it polarized the political parties and turned them into something like secret societies, each of them loyal to a different constitutional understanding. Democrats, loyal to the post-1964 constitution, could not acknowledge (or even see) that they owed their ascendancy to a rollback of the basic constitutional freedoms Americans cherished most. Republicans, loyal to the pre-1964 constitution, could not acknowledge (or even see) that the only way back to the free country of their ideals was through the repeal of the civil rights laws. This combination was a terrible one — rising tensions along with a society-wide inability to talk or think straight about anything.