NORFOLK —  It truly was a beautiful day in the neighborhood when François Clemmons gave a talk at the Norfolk Library on Sunday, Feb. 3.

For 25 years, from 1968 to 1993, Clemmons portrayed “Officer Clemmons,” a police officer on “Mister Rogers’ Neighborhood.”

“Won’t You Be My Neighbor,” a documentary about the classic PBS children’s show, was released last year.

Clemmons was born in Birmingham, Ala., and was raised in Youngstown, Ohio. 

He lives in Middlebury, Vt.,  and...