MANITOWOC, Wis. — In the tourism office here, where workers are accustomed to cheery inquiries about Manitowoc County’s best jogging paths and beach views, the questions have suddenly turned dark: How could you possibly promote tourism in such a corrupt town? Why would anyone visit here?

Fury — by telephone, email and on social media — has also flooded the Manitowoc County Sheriff’s Department, the Manitowoc City Police Department, Manitowoc City Hall and pretty much anywhere else with the name Manitowoc attached to it.

Even the Manitowoc County Historical Society’s executive director, Amy Meyer, has taken to answering the phones so that volunteers — better prepared for gentler inquiries about the region’s history of shipbuilding and its claims to creating the ice cream sundae — do not have to hear “all that yelling, cussing and swearing.” A recent post on the historical society’s Facebook page read, “Too bad your history includes ruining two innocent peoples’ lives.”

The release last month of a Netflix documentary series, “Making a Murderer,” about a decade-old murder case, has upended this county of about 80,000 along Lake Michigan.