Ilyas Wadood (right) of the Islamic Community Center talks with a demonstrator during the "Freedom of Speech Rally Round II" in Phoenix, Arizona May 29, 2015. More than 200 protesters, some armed, berated Islam and its Prophet Mohammed outside an Arizona mosque on Friday in a provocative protest that was denounced by counterprotesters shouting "Go home, Nazis," weeks after an anti-Muslim event in Texas came under attack by two gunmen. REUTERS/Nancy Wiechec

Iraqi security forces and Shi'ite fighters reload a weapon during clashes with Islamic State militants in Salahuddin province March 2, 2015. Iraq's armed forces, backed by Shi'ite militia, attacked Islamic State strongholds north of Baghdad on Monday as they launched an offensive to retake the city of Tikrit and the surrounding Sunni Muslim province of Salahuddin. REUTERS/Thaier Al-Sudani

Richie Diehl team charges out of the chute over trucked-in snow at the 2015 ceremonial start of the Iditarod Trail Sled Dog race in downtown Anchorage, Alaska March 7, 2015. The timed portion of the race, which typically lasts nine days or longer, begins on Monday in Fairbanks, about 300 miles (482 km) away. Traditionally held in Willow, the timed start was moved to Fairbanks this year to accommodate an alternate trail selected after race officials deemed sections of the traditional path unsafe. REUTERS/Mark Meyer (UNITED STATES - Tags: SPORT ANIMALS SOCIETY)