Running Fence (1977)

Second in the series by the Maysles brothers documenting the monuments/sculptures of Christo, whose art projects are landscape-scaled, and more "pop" performance art designed to question how we relate to art in the public sphere, especially when it's as oblique, non-political (at least, that is what he would claim), and neutral as running a fence through a landscape.

Unfortunately the movie Running Fence is not yet available on HBO Max.