Controversial.

However, Uhrskov Jensen in his 2012 book Indvandringens pris (“The Price of Immigration”) showed the huge costs in monetary terms of today’s immigration. It’s not just about Muslim immigration, although that is an extreme case due to the increased threat of terrorism and other issues, but essentially all mass immigration from backward non-European societies to developed Western countries. We see similar patterns with Mexicans in the USA, for instance. Basically, with Third World immigration come Third World problems: rising crime, rising corruption, lower trust and higher welfare costs combined with reduced competitiveness.^[1]

Apparently, this as-night-follows-day observation is a "controversial" view in enlightened circles -- who never have to deal with the negative aspects of mass illegal immigration, mind you. Only schlubs have to endure those, preferably without complaint. As in STFU.

"Controversial" actually means, of course, "true."

For example, these statements are "controversial":

• the Obama "birth certificate" posted on the White House web site is a forgery, 
• Obama's mentor was a card-carrying communist, 
• Valerie Jarrett's grandfather and father-in-law were communists, 
• Obama started his political career in the living room of two communist terrorists, 
• the people have lost control of the federal government, 
• the Supreme Court ignores the Constitution when it feels like it, 
• multiculturalism is a con, 
• Barack Hussein Obama labors to create dependency not jobs, 
• leftists are utterly indifferent to the record of communist tyranny,
• Che Guevara was a psychopathic killer,
• the necessity of "comprehensive" immigration reform is a monstrous lie, and 
• the "civil rights revolution" is an utter failure.

You can think of others.

Notes
^[1] "Terrorism, Mass Murder, and Media Bias." By Fjordman, Gates of Vienna, 1/15/14 (emphasis added).