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.
U.S., allies conduct 31 air strikes in Syria and Iraq against ISIS militants (Reuters)
from the article: Natalie Portman 'shocked' by John Galliano's anti-Semitic slurs