Johnson was killed by a state trooper who found him sleeping in his vehicle, which was parked at the top of an on-ramp on Loop 101.
A renewed focus on social justice in the wake of police killings of Breonna Taylor and George Floyd has seen sales soar at Black-owned bookstores.
On March 13, Breonna Taylor, an EMT working on the frontlines of the coronavirus pandemic, was shot and killed in her Kentucky home by police.
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