Baltimore riots: Looting, fires engulf city after Freddie Gray's funeral

(CNN)Streets in Baltimore looked like a war zone early Tuesday after a night of riots, fires and heartbreak.

"Too many people have spent generations building up this city for it to be destroyed by thugs who -- in a very senseless way -- are trying to tear down what so many have fought for," Mayor Stephanie Rawlings-Blake said.

Security beefed up after looting, fires engulf Baltimore

Buildings and cars across the city were engulfed in flames. About a dozen businesses looted or damaged. At least 15 officers were wounded, six of them seriously, the police commissioner said.