Chaos in the streets will not make him seem presidential. It will accentuate his thuggishness. These chaotic occupiers are his ragtag army of thugs.
The problem is, he has to make it look like the protest is against Romney, not him. That will be a tough sell to the public, who understand that whatever has happened the last four years are on Obama not Romney, no matter how much the thugs rant and rave.
It is not wise to be an agitator when you are the one in power and the obvious culprit of whatever people think is wrong.