peer pressure, especially in matters of social convention, the State may no more use social pressure to enforce orthodoxy than it may use direct means. The embarrassment and intrusion of the religious exercise cannot be refuted by arguing that the prayers are of a de minimis character, since that is an affront to the rabbi and those for whom the prayers have meaning, and since any intrusion was both real and a violation of the objectors' rights. The principle that government may accommodate the free exercise of religion does not supersede the fundamental limitations imposed by the Establishment Clause. It is beyond dispute that, at a minimum, the Constitution guarantees that government may not coerce anyone to support or participate in religion or its exercise, or otherwise act in a way which "establishes a [state] religion or religious faith, or tends to do so." As we have observed before, there are heightened concerns with protecting freedom of conscience from subtle coercive pressure in the elementary and secondary public schools. Our decisions in [Engel] and [Abington] recognize, among other things, that prayer exercises in public schools carry a particular risk of indirect coercion. The concern may not be limited to the context of schools, but it is most pronounced there. What to most believers may seem nothing more than a reasonable request that the nonbeliever respect their religious practices, in a school context may appear to the nonbeliever or dissenter to be an attempt to employ the machinery of the State to enforce a religious orthodoxy. Concurring opinions Justice Blackmun's concurrence stressed that "our decisions have gone beyond prohibiting coercion, however, because the Court has recognized that 'the fullest possible scope of religious liberty,' entails more than freedom from coercion." Blackmun emphasized that the government was without power to place its imprimatur on any religious activity, even if no one was compelled to participate in a state-sponsored religious exercise, directly or indirectly. Justice Souter devoted his concurring opinion to a historical analysis, rebutting the contention that the government could endorse nonsectarian prayers. He cited the writings of James Madison and pointed to the changing versions of the First Amendment that the First Congress considered, as opposed to the version which was eventually adopted. Souter, too, took issue with the school district's defense of non-coercive religious exercises, dismissing the position as without precedential authority. Dissenting opinion Justice Scalia's dissent argued against the