According to the Washington Times :
Law enforcement intelligence officials have put out a warning that someone has sent a text calling on people to kill “all white police officers” in reaction to the death of Freddie Gray while in Baltimore police custody, raising fears violence could spread nationally.
Officers are being warned of possible ambushes and urged to change travel patterns and to tone down clothes or emblems that identify them as police.
The Baltimore police department separately put out a press release on Monday saying various gangs, including the Black Guerrilla Family, Bloods and Crips “haver entered into a partnership to ‘take out’ law enforcement.”
Maryland Governor Larry Hogan declared a state of emergency in Baltimore and activated the National Guard.
