The incident occurred Wednesday at around 8:30 p.m.
Sgt. Paul Gorder was captured on video yelling at protesters in April.
The lawsuit alleges the Minnesota Department of Corrections violated inmates rights through its handling of the pandemic.
Since the pandemic began, eight COVID-positive inmates in Minnesota prisons have died.
The ACLU-MN filed a class-action lawsuit against the Minnesota Department of Corrections and its commissioner.