Multiculturalism is a left wing liberal ideology. Those nuts want everybody to be mix raced, they want no borders, they want all Africa to come here and get social benefits paid by us, the locals, because we are supposed to be bad people because we are white, we are males and some of our ancestors colonized Africa, even if we had nothing to do with it, and frankly, colonization was more an economical failure than anything else glorious.
The thing is that, what is intended with this ideology is to create a new multicultural man, a man with no identity, no cultural background, no reason to fight for anything. It's just a way to implement communism in people's brain by preventing them to have any way to mentally defend themselves, but those nuts don't realize it, because they are those who were brainwashed by USSR subversion during the XXth century...
Another thing is that you might think that immigrants are hard working people coming there to work. Well...not in France, they just come here because we are the most generous welfare giving country. The hard workers, they rather go to French Canada.
For instance, if you are an illegal and over 65 yo you can get 750 euros a months by just asking for it. So what you have now is an incredible number of algerians over 100 yo, more than in France according to statistics about the recipients, in fact their families inherit the allowance for generations on...
You have also the AME, which is free medical care for any illegal. So we have chinese, Algerians, Ivoirians, who come there with a Visa, to just get free medical care and go home right after. They are thousands of way to get benefits like this, and they know the tricks better than lawyers...
Yet, the worst are those thousands of young Africans, growing up in French ghettos in polygamous households because the parents get money allowances for each children, with no proper upbringing, getting educated by street thugs. They can stab you for the only fact you looked them in the eyes. We call them "racailles" which means scums.