“Don’t take the short-term, easy route and just engage in destructive behavior. Take the long-term, hard, but lasting route of working with me and governors, state officials to bring about some real change,” Obama said. “And to those who think that what happened in Ferguson is an excuse for violence, I do not have any sympathy for that. I have no sympathy at all for destroying your own communities.
"Those who are prepared to work constructively, your president will work with you," he said.
He added that two federal investigations into the Aug. 9 shooting remained ongoing and would be "thorough and conducted in a timely manner."
Holder said he was disappointed in Monday's violence, particularly because Brown's father had chosen "heartfelt words about how he wanted his son's memory to be honored," and had discouraged violence.
Other administration officials have been monitoring the situation in Ferguson and other major cities that saw protests Monday.