The Associated Press is planning to hold nationwide rallies today at roughly three dozen U.S. news bureaus. Employees of the world’s largest news agency will protest a proposed 50 percent cut in retirement benefits and a below-inflation wage offer. Reporters and photographers with the AP will not use their personal cars or cell phones for covering assignments, nor will they tweet about their stories. While 1,250 of the agency’s workers have been negotiating a new contract since October and have made a number of concessions, the AP has remained insistent on making deep cuts. AP workers have not received a wage increase in two years, and roughly 10 percent of the agency’s employees were laid off in 2009.