In a move meant to educate cops on the history between communities of color and law enforcement, the Washington DC police department announced that police will have to undergo a 10-hour training program, which includes a trip to the National Museum of African American History, CNN reports.

The department announced that its 3,800 officers and 660 civilian members will all be trained by the end of the summer. The program was launched in January.

DC mayor Muriel Bowser said that crime in the city has fallen, abut experiences negative experiences between police and these communities remain fragile.

“We are excited that…more people in our city, especially police officers, will understand the African American experience in the city, and how it affects the work that they do today,” the mayor said in a news conference last week.