Immigration v. Invasion

"There are 2 separate things happening around the world today:
People leaving their home country for another to become a valuable citizen of their new home nation, speak and write the language and adopt its culture, without necessarily giving up their identity completely and forgetting their roots: that used to be and still is called IMMIGRATION!
People moving to another country and refusing to adapt. Taking everything and giving nothing. Speak nothing but their native tongue, become a segregated nation within a nation and demanding that everybody adapt to them: and that is what's known as an INVASION!" -Unknown

I loved this response to the article ,'Merkel says German Multi-cultural Society Has Failed.' I thought it to be a brilliant comment and eloquently stating the truth. Bravo, to whomever this is!