Not the trees as such, more the stuff you guys used to decorate them with.
rarehistoricalphotos.com
Not so long ago, either.

The lynching of Thomas Shipp and Abram Smith, 1930 - Rare Historical Photos
The corpses hung in the square for hours, attracting throngs of gawkers — including the photographer Lawrence Beitler who was able to snap this picture.

Not so long ago, either.