Ms Taylor was killed in her home in Louisville, Kentucky, by plainclothes police who were executing a “no-knock” search warrant.
The 26 year old hospital worker was shot as officers stormed the apartment just after midnight while she was with her boyfriend, Kenneth Walker.
Her death sparked racial injustice protests around the country.
Only one officer involved in the raid – former Louisville detective Brett Hankinson – had been previously charged over the case.
But Mr Hankinson, who fired 10 shots during the incident, was acquitted by a jury earlier this year.
He is among the four people to face new charges through the US Department of Justice.
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