Not to mentioned he threatened to kill her boyfriend. He should indeed be sanctioned by the law and the public for his remarks and threats. Also you may slept during democracy class back at school but basic rights conflict with other constantly and it's up to the judges and law makers to find the proper balance. They are correct with making laws against such hate speech and threats.
Iran's Rohani calls for more freedom of expression, says that gov't critics shouldn't be jailed (AP)
from the article: Natalie Portman 'shocked' by John Galliano's anti-Semitic slurs