That is a fake quote.
http://www.truthorfiction.com/rumors/o/obama-books.htm
“I will stand with the Muslims should the political winds shift in an ugly direction.”-Fiction!
This is a corruption of a quote from Obama’s book The Audacity of Hope. It is from a section that talks about the concerns of immigrants who are American citizens.
Here is the accurate and more complete quote: “Of course, not all my conversations in immigrant communities follow this easy pattern. In the wake of 9/11, my meetings with Arab and Pakistani Americans, for example, have a more urgent quality, for the stories of detentions and FBI questioning and hard stares from neighbors have shaken their sense of security and belonging. They have been reminded that the history of immigration in this country has a dark underbelly; they need specific assurances that their citizenship really means something, that America has learned the right lessons from the Japanese internments during World War II, and that I will stand with them should the political winds shift in an ugly direction.”