Roger Federer of Switzerland wipes his forehead during his quarter-final match against Jo-Wilfried Tsonga of France at the Wimbledon tennis championships in London June 29, 2011. [Photo/Agencies]

Protesters are seen in front of smoke after burning a police booth in front of the Interior Ministry in Cairo June 29, 2011. Police in central Cairo fired tear gas on Wednesday at hundreds of mainly young stone-throwing Egyptians demanding that trials of former senior officials from the discredited Mubarak era proceed faster. Clashes broke out late on Tuesday in an area of the capital where some families of the more than 840 people killed in the uprising that led to President Hosni Mubarak's overthrow in February held an event to honour those dead. [Photo/Agencies]