American Legion v. American Humanist Assn.
1925 Bladensburg ‘Peace Cross’ can stay on public land ruling. This was a win for freedom of religion: a cross is often a secular display and even if it wasn't, respecting a religion (and a tradition) is not the same as promoting it, nor a violation of separation of Church and State. Naturally Ginsburg and Sotomayor took the progressive/anti-Liberty position.
If you want stupidity, just look to Ginsberg (and in this case, Sotomayor). Her position was that in 1947 (Everson v. Board of Ed. of Ewing) they established that the First Amendment to the Constitution demands governmental neutrality among religious faiths, and between religion and nonreligion. They did that, and she does that by ignoring that for 200 years before that, there was no such imagined requirement. So she whines about diminishing the precedent that ignored all prior precedent -- while she ignores the original intent and all the things the others cited in favor of their opinion. This is known as the ostrich technique: you won't accept my re-imagined rules, that's cheating!
If RBG had her way, it's saying that Arlington cemetery (and many other military cemeteries) would stop having to maintain the gravestones of the fallen soldiers, because most of them are crosses.