(SFGate) - What started as a joyous ride through wine county Saturday afternoon turned into a “humiliating” experience for 11 African American women, who said they were booted off the Napa Valley Wine Train for laughing and talking too loud.

Accounts and pictures of the episode have been spreading across social media, spawning the hashtag #LaughingWhileBlack while the women involved have questioned whether they would have been treated differently if they were not African American.

“It was humiliating. I’m really offended to be quite honest,” said 47-year-old Lisa Johnson, who was among Saturday’s group. “I felt like it was a racist attack on us. I feel like we were being singled out.”

The women have since been given a full refund by the train company, but continue to seek a public apology.

In a statement Sunday, Napa Valley Wine Train spokeswoman Kira Devitt said the company “received complaints from several parties in the same car and after three attempts from staff, requesting that the group keep the noise to an acceptable level, they were removed from the train and offered transportation back to the station in Napa.”

The incident began when Johnson and her book club, the Sisters on the Reading Edge, embarked around 11 a.m. for their annual trip through wine country — an adventure they had been planning since November.

Johnson, a self-described social media fanatic, posted pictures on Facebook, documenting the entire episode as it unfolded.

The women — all wearing matching T-shirts — were all seated in the same car in adjacent tables and seats, laughing and having a good time. They and the other passengers on the sold-out train were ordering tastings and glasses of wine as they rode the 18-mile stretch from Napa to St. Helena through California’s most famous and picturesque vineyards and wineries.

And while the group — which included an 83-year-old grandmother — may at times have been “rambunctious,” they were not “obnoxious or intoxicated,” Johnson said.

Several passengers, she said, even came up to them to take pictures, and asked about the romance novel they were reading for their club.

But a short while into their trip, Johnson said a manager on the train asked them to pipe it down.

“The train is set up to be with your friends, to drink wine and have a good time,” Johnson said. “We were thinking, ‘Who are we offending?’”

Later on, Johnson said the manager told them that “this isn’t going to work,” and that if they didn’t “tone it down,” they were going to be asked to get off the train.

“It was a bizarre thing for all of us,” she said, adding that many in the group quieted down and wondered what had happened.

According to Johnson, one of the women in the same car told the group “this isn’t a bar.”

“And we though, um, yes it is,” Johnson said.

What came next, she said, was the worst part of the afternoon. When the train pulled into the St. Helena station, the group had to do the “walk of shame” as they were escorted past passengers on the six other cars, Johnson said. At the station, the group was met by officers from the Napa Valley Railroad and St. Helena police departments.

“People were looking at us,” Johnson said. “To get escorted into the hands of waiting police officers. That’s the humiliating part.”

But Chief Jeff Hullquist of the Napa Valley Railroad Police Department said there “was no police action taken” at the station.

“When someone is removed from a train, they have to be dropped off at a station, and our policy is if someone is let off the train we’ll stand by,” he said. “We keep them safe until someone can get them.”

“The Napa Valley Wine Train does not enjoy removing guests from our trains, but takes these things very seriously in order to ensure the enjoyment and safety of all of our guests,” Devitt said, adding that about once a month guests need to be removed from the train.