Sometime recently, Google seemed to have dropped all search suggestions for a keyword plus the word are.
A Google Web Search Help thread reported that the words [jews are] no longer brings up any search suggestions as you type. So the searcher asked, "Are certain suggestions removed?" So I tried a bunch I knew did bring up things in the past, such as Chinese are..., Blacks are...., Muslims are... and nothing came up.
It does seem like Google decided to drop the X are type of search suggestions, which may be a smart move.
Forum discussion at Google Web Search Help.

Comments:
Grod69
05/05/2010 04:01 pm
Seems to be the case with Yahoo! and Bing too. Definately a good thing.
Kristen
05/05/2010 04:02 pm
Not all. Just did a search for "cats are" and "reds are" - thinking maybe they removed "X are" for colors. Nope. Cats are aliens. Reds are on the radio. Still, you were right on the ethnicities, they continue not to show. Apparently, Google scrubbed ethnic-related "X are" search suggestions, but not all.
Barry Schwartz
05/05/2010 04:29 pm
Kristen, thanks for the clarification.
cris
05/05/2010 05:20 pm
It still comes up when I google jews are, muslims are etc.