It's a lose lose situation

By talking about it he gets people to see what's happening, because the MSM won't cover it for one second

If he sends in forces, the MSM will spin it that his troops are beating peaceful protestors and half the country will believe it

Long as he keeps bringing attention to it, people can slowly make up their own minds. At the end of the day the President shouldn't be micro-managing riots in cities, that's the job of the mayor and governor