The RaceWire Beat is a digest of the day’s top news stories on race and politics collected by the staff at ColorLines magazine. H.I.V. Testing Increases in City Jails and Hospitals H.I.V. testing at New York City-owned clinics, hospitals and jails jumped by almost 50 percent in a single year reflecting a campaign to make HIV screening a routine part of health care. A Racial Rift That Isn’t Black and White Race relations in the south shift with a growing increase in the Latino population. Workplace Bias Against Arabs on Rise A tally of complaints jumped in 2005. Some victims may fear reporting to authorities. Justice for Immigrants Tense national climate towards immigrants is reflected in the legal system.