>> why would he want to stab his own child? it's terrible. i feel so bad. >> tina's classmates told police that tina often rebelled against her parents and their old-world traditions. they also said the isas objected to tina's choice of a boyfriend. >> he was an honor student. he was very, very bright. he was at the magnate schools, a sophisticated program in st. louis public schools. he was an artist. he painted. he drew. he wrote poems. >> i don't think it was just that he was black, i think the real issue was she had a boyfriend and they could no longer control her. >> when the fbi heard about tina's death, they called lead investigator harry hager with some astonishing news. u.s. intelligence had photographed zein isa attending a meeting with known terrorists in mexico. all had ties to the palestine liberation organization and international terror broker, abu