I require an example of this claim.
Differences in free speech law geographically? France & Germany are a western countries, have a constitutional protection of free speech, and ban Holocaust denial. The USA is a western country, has a constitutional protection of free speech, and Holocause denial is legal. France, USA and Germany disagree if "banning Holocaust denial" counts as interfering with free speech.
For cinema in the USA, a 9-0 Supreme Court case in 1915 found that movies weren't covered by the First Amendment. That was overturned in 1952 ( https://en.wikipedia.org/wiki/Joseph_Burstyn,_Inc._v._Wilson )
And yet, so many Western countries disagree about what it actually means and have different laws. There's differences in places and time. Cinema and movies weren't covered by 1st Amendment for decades in the USA.