Let’s add a few of Walter Hood’s work in Oakland as contemporary examples.
I agree with Olmsted and Hood on the need for public landscapes to embody a democratic society, though I must say there were (probably still are) some parks in Tokyo where some residents have decided to stake out their turf and fight to retain their claim which is a tad exclusionary from the other end. The issue for me is public safety (and sanitation) both perceived and real.
We do have private parks and gardens at a pay for admission after all…