They can, as can other pedestrians, and even a little chihuahua dog can trip someone and kill them... But bike-bike and bike-pedestrian deaths are so rare that

They can, as can other pedestrians, and even a little chihuahua dog can trip someone and kill them... But bike-bike and bike-pedestrian deaths are so rare that they make front page news (and in SF, the Bucchere case from 15 years ago is always brought up when people want to point out how dangerous bikes are). Yet cars kill about 20 people a year in SF, and people just shrug and ignore it.