This weekend would be a good time for Americans in South Korea to keep a low profile because the potential for violence caused by the upcoming Constitutional Court ruling is a probability:

The U.S. Embassy in Seoul advised American citizens in South Korea on Wednesday to avoid large crowds or demonstrations ahead of the Constitutional Court’s verdict on President Yoon Suk Yeol’s impeachment.
The notice came as the top court is set to rule on Yoon’s impeachment over his brief imposition of martial law on Dec. 3.
“In connection with the Constitutional Court’s verdict on the impeachment of President Yoon, U.S. citizens should anticipate large-scale demonstrations and an increased police presence,” the embassy said in a posting on X.
“Avoid areas where demonstrations are taking place, and exercise caution in the vicinity of any large crowds, gatherings, protests, or rallies,” it said.
You can read more at the link.