The TikTok video, posted on Friday, was shared more than 28,000 times with the caption: "What nationality are they?? Is it time for Thailand to stop free visas yet?"
In the clip, a Thai woman off-camera is heard repeatedly telling the Italian group to be quiet.
"In Thailand, we don't scream," she says, before a woman from the group replies: "Sorry for bringing money to your country."
One boy was filmed waving and then gesturing to the camera with only his middle finger raised.
The dispute escalated as the Thai woman accused the Italians of having "no manners" -- and then also used vulgar language and gestures.
