We read:
"A Case Western Reserve University statistics professor who admitted falsely reporting to the FBI that she received racially charged hate mail has been sentenced to six months in prison. Ramani Sri Pilla must also pay back $66,000 that the FBI and the university spent investigating her false claims. U.S. District Judge David Dowd imposed the sentence.
Prosecutors say Pilla told FBI investigators that she received four hate letters between August 2006 and February of this year. Pilla, who is Indian, named three co-workers as possible suspects. And she also sued the school, who she accused of not protecting her. Pilla later admitted that she wrote the letters and then sent them to herself.
Source
These things are always attributed to "racists" and conservatives and just serve to create a false impression of intolerance among ordinary Americans.