An interesting essay in the Atlantic discusses the end of liberal love for the Court, but first it explains why that love appeared in the mid-twentieth century:
Fundamentally, though, many liberals loved the Supreme Court for the same reason they loved the law: a vision of universal harmony and justice brought about by reason and persuasion, not the brute forces of political power. Victory in the political arena is always incomplete and uncertain, not to mention grubby. Politics appeals to our baser instincts of greed and fear and competition—which, of course, is why it is so powerful. By contrast, law—whether through “neutral principles” or “reasoned elaboration” or elaborate moral theories, to name a few of the core organizing ideas of 20th-century legal theory—holds out the promise of something objective, something True. To win in the court of the Constitution is to have one’s view enshrined as just, not only for today but with the promise of all time.