Q: How many bullets does it take to shoot out a door lock?
A: On TV, one. In France, five thousand.
Not sure when or where that shift happened or why countries feel the need to appease everyone.
Blame Canada. Seriously. They started all of it with their public emphasis on the social importance of immigration. The Canadian Royal Commission on Bilingualism and Biculturalism is where the political awareness of multiculturalism was invented, and multiculturalism became official Canadian national policy in 1971, followed by Australia in 1973, and then it was quickly adopted as official policy by most member-states of the EU. Sounds good. Feels good. Liberal mana from heaven. Except just like other feelgood things that are great on paper, it don't work with people (see
Communism, Socialism, et al).
It was also in the early-to-mid 1970s that smarter minds in the US began a real push (albeit predictably unsuccessful, to legislate English as the official language of the United States), as a means to push back the tide of Multiculturalism. I remember that time well, because that very topic was one of the most hotly debated topics in the debating competitions in which I participated in high school.
Recently, however, the Netherlands and Denmark have noticed that it don't work with people (the bad grammar is intentional, BTW) and have reversed that policy and are officially monoculturalism countries. A similar reversal is currently being debated in the UK and EU countries due to what Aristotle said - evidence of incipient segregation and anxieties over "home-grown" terrorism, a flat refusal by immigrants to learn the local customs and culture.
In the US, Multiculturalism isn't an official policy at the federal level (except for the Department of Education, where it is, as they have introduced Multiculturalism and ethnic diversity studies at the elementary school level and on up), but it is the de facto policy, what with the official emphasis on ethnic diversity, starting with President Clinton's oxymoronically named One America Initiative that tried to create The One American Culture based on respect and shared values of Multiculturalism. Yes, it's retarded as it sounds.