In 2014, tension over police-community relations in Boston, Chicago and New York made headlines. Riots and protests erupted after a series of high-profile police-involved shootings came to light, mostly captured through amateur cellphone videos. And while these videos stirred public sentiment, persistent issues with the admissibility, authenticity and interpretation of this digital evidence mitigated their effect on final verdicts in a court of law.
Source: https://gcn.com/articles/2019/04/17/blockchain-public-safety.aspx
