Authorities have not disclosed the suspect's motive, but Jackson Fire Chief Charles Felton told CBS News the FBI is looking into the possibility of a hate crime.
In the civil rights era, the agency formed its Community Relations Service, a group of dozens of federal specialists who were informally referred to as "America's peacemaker."
"If they're saying we shouldn't believe our eyes, then let the investigation take place before you characterize this mother of three as a domestic terrorist," Rep. Ilhan Omar said on "Face the Nation with Margaret Brennan."
Democratic Rep. Ilhan Omar denounced a surge of federal agents to Minneapolis targeting Somalis and other immigrants after a fraud scheme in the state.
