The Black Lives Matter protest was disruptive, loud, tense and passionate. The first thing that came to my mind was ACT UP, a group I was a part of, which engaged in similar kinds of protest and disruption, including against Democratic presidential candidates. The urgency of the protest was similar as well: People are dying, and no one in power seems to be doing anything to stop it.
While cost is significant, structural barriers to fitness have an even greater impact on black women's health. The idea that anyone can just go outside for a run in their neighborhood makes a lot of assumptions about that neighborhood. People are less likely to take a nice evening stroll if there are no sidewalks or if they don't feel safe.