By Jude Joffe-Block An observer films ICE agents this month in Minneapolis. A new lawsuit alleges federal agents are unconstitutionally retaliating against people who are lawfully observing and recording federal immigration enforcement operations by gathering their personal information and labeling them as domestic terrorists Stephen Maturen/Getty Images hide caption Last month, Colleen Fagan was observing an immigration enforcement operation at an apartment complex in Portland, Maine, when federal agents scanned her face with a smartphone and appeared to record her car license plate number. In a social media video she recorded, Fagan can be heard asking why the agent was taking her information. What the agent said next made the video go viral. "Cause we have a nice little database," the masked agent said.…