For example, ableism, which privileges able-bodied individuals, is another kind of power shadow often lurking in datasets, particularly those used for computer vision. For pedestrian tracking datasets, few have data that specifically include individuals who use assistive devices. Just as the past dwells in our data, so too do power shadows that show existing social hierarchies on the basis of race, gender, ability, and more. Relying on convenient data collection methods by collecting what is most popular and most readily available will reflect existing power structures.