Last week, federal agents arrested seven suspected members of the white supremacist group “The Base.” Among the suspects, three men from North Georgia — Dacula, Dalton and Silver Creek — were allegedly planning to kill a Bartow County couple and preparing for a race war. The arrests expose a new front in violent extremism. Law enforcement is adapting to new domestic terrorist methods, and they consider small clusters of cells united by a larger group or ideology to be an expanding threat.