Muslim Brotherhood supporters throw stones towards opponents during clashes on April 19, in central Cairo.

Egyptian protesters clash near a bus belonging to Muslim Brotherhood supporters burns after it was reportedly set alight by anti- government protesters in Cairo, Egypt, Friday, April 19.

Muslim Brotherhood members hit an anti-government protester during clashes near Cairo's Tahrir Square, April 19.

Same-sex marriage supporters demonstrate in front of the Supreme Court on March 27, in Washington, D.C.

A demonstrator holds a Bible while marching outside the Supreme Court in Washington, on March 26, as the court heard arguments on California's voter approved ban on same-sex marriage, Proposition 8.

Pro same-sex marriage activist Ryan Toney, 18, of Washington, D.C. stands in front of the Supreme Court in Washington D.C. on Wednesday.

Opponents of same-sex marriage participate in the March for Marriage in Washington, D.C. on March 26.

Same-sex marriage supporters and same-sex marriage opponents argue their points in front of the US Supreme Court on March 26, in Washington, D.C.

Julie Wells of United Wisconsin celebrates in the back of a moving van, Jan. 17, 2012, in Madison, Wis., that contains about 1 million signatures to recall Gov. Scott Walker.

Israeli police officers detain a left-wing demonstrator during a protest against legislation they regard as anti-democratic in Tel Aviv Nov. 22, 2011. An amendment to a bill which would increase the amount paid as compensation in a libel suit passed its first reading on Monday, and two other bills awaiting ratification would give parliament some control over appointments to Israel's Supreme Court.

Israeli police officers detain a left-wing demonstrator during a protest against legislation they regard as anti-democratic in Tel Aviv Nov. 22, 2011.

South Africa police stand guard as about 2,000 people demonstrate on Oct. 27, 2011 in downtown Johannesburg to demand jobs, in a protest organized by the militant youth wing of the ruling African National Congress (ANC). Protesters were bused in from around the country to support the Youth League leader Julius Malema, who accuses his party's leadership of not doing enough to create jobs in a country with 25.7 percent unemployment.

ANC youth wing leader Julius Malema addresses protesters on Oct. 27, 2011 during a demonstration in downtown Johannesburg.

A government employee tries to escape from dyed water sprayed by police to disperse a demonstration in Srinagar on Monday, July 18. Hundreds of demonstrators, some of whom were later arrested according to local reports, took to the streets to demand a pay rise.

Indian policemen are reflected in colored water used by a water cannon, as they use batons as they attempt to stop Kashmiri government employees during a protest in Srinagar on Monday.

A general views shows Egyptian protesters performing the Friday prayer during a protest aimed at pressuring the country's military rulers into expediting the prosecution of former regime officials, in Tahrir Square Cairo, Egpyt, on Friday. According to local sources, protesters are disappointed at what they say the slow pace of bringing former president Hosny Mubarak, ousted in a popular revolt earlier this year, and tainted officials to justice.

An anti-government protester demanding the ouster of Yemen's President Ali Abdullah Saleh helps a fellow protester who was wounded during clashes with police in Sanaa on Wednesday, May 11.

A Yemeni army soldier gestures to anti-government protestors attending a rally demanding the resignation of Yemeni President Ali Abdullah Saleh, in Taiz, Yemen on Wednesday. Yemeni security forces, including snipers, opened fire on thousands of anti-government protesters marching to the Cabinet building.

A wounded anti-government protester is brought to a field hospital during clashes with Yemeni security forces in Sanaa on Wednesday. Yemeni security forces, including snipers, opened fire on thousands of anti-government protesters marching to the Cabinet building on Wednesday.

Yemeni anti-government protesters shout slogans during a demonstration demanding the ousting of Yemeni President Ali Abdullah Saleh, in Sanaa on Wednesday. According to media sources, protesters Wedneday seized various government offices, including a police station, in the southern Yemeni city of Taiz, reported a witness as anti-government protests continue in the country.