Read, or better yet don’t read, what kind of a life Amanda Knox led. Her alibi was that she was smoking marijuana (lots more left out and marijuana is illegal in Italy) with her equally prust and pritzusdige boyfriend. She also framed an innocent man.
Average non-Jewish Americans are on a higher moral level than she is and get turned off the minute they see all the sleaze in the case. Many Americans have roots in Italy or admire Italian culture and they don’t see why a silly, loose girl should get a break when she went there to have a good time under the guise of language instruction or cultural exchange.
That is why no one cares about Amanda Knox, one way or the other.