http://www.nbcnews.com/storyline/mi...l-racism-keep-isis-teaming-boko-haram-n307786 Long before ISIS militants beheaded Christians on a Libyan beach last week, Nigeria's Boko Haram was carrying out similar atrocities 1,500 miles to the south. Now that ISIS is operating in northern Africa, will the Syria-based organization join forces with the continent's largest Islamist terror group? Maybe not, say U.S. intelligence officials, and they suggest one obstacle is racism. "The Arab world is incredibly racist," explained a U.S. intelligence official. "They don't see black Africans as equivalent to them." ISIS may show "affinity" with Boko Haram, said the official, "but they stop short of allegiance." Moreover, said the official, while Boko Haram has in the past year released videos to show "affiliation" with groups like ISIS, there's no evidence of either group sending members to fight with the other. And while Boko Haram has praised ISIS, and shown the ISIS flag in videos, ISIS has not reciprocated.