Experts say the following decades of research have turned up similar findings. Escalating force by police leads to more violence, not less. It tends to create feedback loops, where protesters escalate against police, police escalate even further, and both sides become increasingly angry and afraid…. Still, if researchers know it’s not a good idea for police to use force against protests and demonstrations, and that information has been available for decades, why do we still see situations like this happening all over the country? That part is harder to answer.

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