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Nevertheless, the Justice Department aggressively pursued the alleged perpetrator. They jailed Sidney Lori Reid on a charge of felony assault, accusing her of injuring the agent during a July protest of President Donald Trump’s immigration crackdown in Washington, D.C...

When grand jurors thrice declined to indict the 44-year-old on the felony, prosecutors tried Reid on a misdemeanor...

It took jurors less than two hours to acquit the animal hospital worker. “It seemed like my life was just going to be taken away from me,” said Reid...

Reid’s case was part of the Justice Department’s months-long effort to prosecute people accused of assaulting or hindering federal officers while protesting Trump’s immigration crackdown...

The Justice Department has struggled to deliver on that commitment...

Several factors help explain the mixed record. Sometimes prosecutors have failed to win grand jury indictments required to prosecute someone on a felony...

Ultimately, as the AP's review indicates, the outcome of these cases raises critical questions about the nature of justice and the balance of power...