Any form of criticism of the occupation of Palestine is met with an accusation of anti Semitic behaviour irrespective of whether the truth has been spoken. The ban mandated on any truth spoken regarding Israel has indeed passed into law in some American States where the AIPAC lobby has the greatest influence.
Free speech has been hobbled in the case of the two New Zealand people who asked Lorde to consider not to participate in a cultural tour of Israel. Israel successfully prosecuted these two young women. This is repugnant. The sort of criticism will not be tolerated in any civilised country.