By Ryan Shepard Students are calling for Georgetown University Law Center to cut ties with professor Sandra Sellers after she was recorded making racist remarks during a meeting. Sellers told others that Black students in her class "are just plain at the bottom." “I hate to say this. I ended up having this, you know, angst every semester that a lot of my lower ones are Blacks. Happens almost every semester. And it’s like, ‘Oh, come on.’ You know. Get some really good ones but they’re also usually some that are just plain at the bottom. It drives me crazy,” she told fellow professor