Boko Haram is a Jihadist organization in northern Nigeria. They are dedicated to among other things eradication of Western Educational influences and man-made laws. They promote establishment of Sharia Law and openly attack Christians with violence.
Their name literally means Western Education Sin in the Hausa language which is spoken primarily in the area where the group generated from over a decade ago. It gets it's name from it's strong opposition to anything Western as it is a corrupting influence on Muslims.
They have engaged in assassinations, destruction of christian churches and attacks on the government of Nigeria. They propose to end Democracy and reject the teaching of the Earth being flat. Like many such organizations around the world there is a presumed affiliation with Al Qaida.
Since 2011 US Forces Africa Command has assessed this organization at high risk for potentially targeting westerners for attacks. They are a major terrorist threat.
Today the United States Department of State warned the Nigerian government regarding strikes made against Boko Haram. Boko Haram operates out of Northern Nigeria for the purpose of eradicating Democracy, Western Education and imposition of Sharia Law. The Obama Administration chooses to warn the Nigerian government about attacking them. You can draw your own conclusions about misplaced loyalty.