More interesting to me are the granite gateposts memorializing Frank L. Dowling, a Tammany Hall leader who served as President of the Board of Aldermen (an antecedent of today's City Council) in the nineteen-teens. Faded, eroded, they're rather fitting as a remembrance of those bygone days of corruption. (Because as everyone knows, local politicians today are squeaky-clean, every last one of them!)
The Parks website seems confused about the pillars, noting correctly that the Horatio Seymour Tammany Club put them up, but getting the year and the honoree wrong. One suspects there might be some confused old ghosts passing through the posts, over and over, wondering "What's my name?" and "Why have I been misremembered?" Or even "Have I been totally forgotten?" (Yes, pretty much.)
The guy in this photo is probably thinking about something more current. We'll never know. At least he found a nice bench.