Batts described most of the crowds as "Baltimore youthful residents." who thought it was "cute to throw cinderblocks at the police.
He praised the actions of one embarrassed mom who grabbed her hood-wearing son and started "slapping his head."
"I wish I had more mothers out there like that," Batts said.
Asked what he would say to the residents of Baltimore, Batts said, "This is our city; we have to live in it. For parents: Take control of your kids."
On the day she was sworn into office, Attorney General Loretta Lynch briefed President Barack Obama on the unfolding events in the Charm City.
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"Attorney General Lynch assured the President that she would continue to monitor events in Baltimore and that the Department of Justice stands ready to provide any assistance that might be helpful there," the White House said in a statement.
Lynch condemned the "senseless acts of violence" and promised to "bring the full resources of the Department of Justice to bear in protecting those under threat, investigating wrongdoing and securing an end to the violence."
Police said 15 cops had been injured; at least one had been knocked unconscious.
"We will find the people responsible and put them in jail," said Captain Eric Kowalczyk. "They attacked officers without provocation."
Baltimore cops took to Twitter to try to keep the situation from spiraling out of control.
"Several juveniles are part of these aggressive groups. WE ARE ASKING ALL PARENTS TO LOCATE THEIR CHILDREN AND BRING THEM HOME," read a tweet on the official Baltimore Police Twitter feed.
The Rev. Jamal Bryant, who earlier delivered a eulogy at Gray's funeral, said the violence was not what was needed "just hours out of the burial."
"I'm asking every young person to go home," Bryant told reporters.
He also took to Twitter to ask Baltimore clergy to come to respond to the mall at the center of the mayhem to help calm the situation.
"Clergy!!!.....we need to be in The streets right NOW!!" Bryant tweeted, adding later, "All disciplined brothers both Muslim & Christian we are one army today...we must reclaim this situation! Come to Mindawmin now!!"
Billy Murphy, an attorney for Gray's family, said they were in shock watching the violence in Baltimore.
"They don't want this movement nationally to be marred by violence," he said. "It makes no sense.
"This isn't a white/black issue, this is an issue of how do we treat each other as human beings"
His firm posted the following statement its FaceBook page: "Freddie Gray's family is watching the looting and rioting and is upset, sad, angry. They are begging people to stop this."
Cops initially shooed ticket holders inside Camden Yards for a game between the Orioles and the White Sox, but around 6:30, the Orioles announced the game would be postponed.
And the Maryland State police sent 42 troopers to assist in Baltimore with another 40 set to respond.
Earlier, Baltimore police said several gangs, including the Black Guerilla Family, Bloods, and Crips formed a partnership to "take out" law enforcement officers.
The police said in a press release they consider the gang rumblings a "credible threat," but offered no specifics.
The threats were enough to spur the LAPD to order its officers to ride in pair rather than solo "out of an abundance of caution" for their officers.
At Gray's funeral, Bryant urged mourners to join the protests that have occurred in the wake of Gray's death on April 19.
"Freddie's death is not in vain," Bryant said. "After this day, we're going to keep on marching. After this day, we're going to keep demanding justice."
But some of the protests got out of hand Monday afternoon with police reporting more than 2,000 protesters throwing rocks and debris at officers in the area
Gray was arrested after a foot pursuit on April 12 and was seen on video yelling as he was hauled into a police van. After a stop to shackle his feet, Gray arrived at a police station house with his spinal column 80 percent severed. He died a week later.
Officials have promised an exhaustive investigation with results due on May 1.