A couple have been charged with felonious assault after widely circulated videos showed a white woman pointing a gun at a Black woman in a parking lot in Michigan, the authorities said on Thursday. In the videos, the Black woman and her teenage daughter confront a white man and woman outside a Chipotle restaurant in Orion Township, Mich. The exchange quickly escalates from an argument about an apology into accusations of racism, with a gun held only a few feet from the Black woman as she filmed with her cellphone. Both had guns in their possession, which they were legally permitted to carry, when they were taken into custody, Sheriff Bouchard said. The episode began when the two parties bumped into each other outside of the Chipotle, Sheriff Bouchard said.