[G]overnment endorsement . . . of religion . . . sends a message to nonadherents that they are outsiders, not full members of the political community, and an accompanying message to adherents that they are insiders, favored members of the political community.
Sandra Day O'ConnorWe hold that the reckless disregard for human life implicit in knowingly engaging in criminal activity known to carry a grave risk of death represents a highly culpable mental state that may be taken into account in making a capital sentencing judgment not inevitable, lethal result.
Sandra Day O'Connor