Only some concrete stuff has emerged about this yet, so hold rumours:
Associate Professor Stephen M. Kajiura was reviewing with his evolution class in GS 120 for a midterm when FAU [Florida Atlantic University] student Jonatha Carr interrupted him: “How does evolution kill black people?” she asked. Kajiura attempted to explain that evolution doesn’t kill anyone.
And then, Carr became violent.
A fellow classmate, Rachel Bustamante, was sitting behind Carr prior to her outburst and noticed she had been avoiding looking at the professor until 11:35 a.m. — that’s when she snapped. The classmate reported that Kajiura was discussing attraction between peacocks when Carr raised her hand to ask her question about evolution. She asked it four times, and became increasingly upset each time Kajiura’s answer failed to satisfy her.- “FAU student threatens to kill professor and classmates” ( FAU University Press Beta, March 20, 2012)
Update: Student Tased From Hugo Gye, “’I will kill the f*** out of you’: Student’s death threats to professor in evolution class” Daily Mail, March 21, 2012:
A Florida student was Tased and taken to hospital after issuing death threats during a foul-mouthed rant in the middle of a class on evolution. [More YouTube]
Some sources suggest that she was distraught over the recent murder of Trayvon Martin in Miami.