This past Saturday marked the one-year anniversary of Marvin Booker's death at the Denver jail after a tragic confrontation with Sheriff Department deputies. Booker's parents commemorated the dark day by joining members of a rights coalition and police brutality awareness activists for a rally in front of the jailhouse. Booker's death was one of several high-profile episodes over the last few years that have sparked widespread concerns over law enforcement practices in the Denver metro area. At the event Saturday, the ACLU's Rosemary Harris Lytle said the group asked the U.S. Justice Department to investigate police practices in the city.