Samuel Roberts, a professor at Columbia University, remembered being stopped by the police as he walked his Rottweiler along Morningside Drive after someone reported that a black man was robbing people with a dog in tow.
Tamiesha Parris Flatts, a nurse at Memorial Sloan Kettering Cancer Center, recalled how once, when she was slow to get out of a New York City cab, the driver of the car behind called her a racial slur.
Ryan Brown, who works for the job search website Indeed, recalled all the…