I hear others suggest that the violence benefits the Democrats' "get out the black vote" efforts.
The Democrats using their patented 1960s race riots, death, and destruction for political gain is still key to their political success.
Back in 2000 they were just barely prevented from doing it.
See this FR thread. The NR source I used to cite is 404ed.
the quote is by Karenna Gore and it's about the 2000 post-election day dispute. It sure seemed to me that the Dems were ready to spark race riots -- which IMO the MSM employees would have used to demand that Bush concede and bow to the "will of the people" (a phrase often included in MSM reports on the election dispute).
"He [Al Gore] said, 'We have to do what's best for the country, and it is not good for the country to have this kind of divisiveness.' And he was on the phone, really calling off the dogs. There were people who wanted to fan the the flames of the racial issue and have real unrest. And he was on the phone asking them not to, because of what was best for the country not because of what was best for him politically. And that's really who he is."