Debates about police tactics and racial inequality in America will be at the forefront for many celebrating Black History Month this year. The police killings of Michael Brown in Ferguson, Mo.; Joshua Crawford in Ohio; Eric Garner in New York; Tamir Rice in Cleveland and Dontre Hamilton in Milwaukee have sparked outrage in communities across the nation. A new civil rights effort, known by the #BlackLivesMatter social media hashtag, is one of the most visible byproducts of resurgent racial tensions. read more