In this case, a change in strategy is a change in agenda. Liberal legal activists have used the courts to defend and expand civil liberties. Defedning free speech and protecting the rights of the accused are worthy goals, to be sure, but they are not the stuff of broad-based popular movements. Even when popular movements do grow up on the left, such as the civil rights movement in the 50's and 60's or the pro-choice movement in the 70's, supreme court cases like
Brown v. Board of Education or
Roe v. Wade make them unecessary. If liberals pursue a strategy based in popular democracy, they'll have to turn to issues that are not within the purview of the court, such as economic fairness and equality of oppotunity. That would mean a huge change in the political agenda, because those subjects are barely even discussed at present.
What exactly do you mean when you claim the Supreme Court has "forced" its agenda on people? It has forced majorities to respect civil liberties by preventing them from passing laws that, for example, segregate public schools or deny voting rights. However, even if the court diminishes the democratic perogative of the majority by protecting civil liberties, it is at the same time freeing people from government coersion, allowing them to live as they choose and participate more freely in the democratic process. The court is a paradoxical institution: it's anti-democratic in that it forces majorities to accede to its will, but it's democratic in the sense that it protects the right of the individual to vote and participate in politics. This paradox makes it difficult to dismiss liberal politics as mere totalitarianism. Defending the rights of the individual against the encroachment of government is not a totalitarian project.
This whole argument is kind of strange because the era of liberal activism on the supreme court has been over for a very long time. Both Clinton appointees are moderate justices who think the court should defer to the legislature as much as possible: Ginsburg was actually opposed to Roe when it was decided (she only supports it now because of
starre decisis) and Breyer has just
written a book arguing for judicial moderation. If you look at their records, both are much less willing to overturn the will of Congress than arch-conservatives like Scalia and Thomas, who would strip congress of most of it's power to make laws democratically if they had the chance. The activist judges on the court today are conservatives.