Example with a context (Riots in Baltimore over man's death in police custody):
Monday's riot was the latest flare-up over the mysterious death of Freddie Gray, whose fatal encounter with officers came amid the national debate over police use of force, especially when black suspects are involved. Gray was African-American. Police have declined to specify the races of the six officers involved in his arrest, all of whom have been suspended with pay while they are under investigation.
How should that exactly be understood?