My guess is that the protests are targeted more generally at gentrification. People of privilege moving to the Mission, mostly ignoring the culture of the neighborhood and it's long-time residents, fueling out of control rent increases, slowly destroying a cultural landmark.
I suspect the damage has more to do with CA property tax and SF's NIMBy zoning laws than silicon valley bussing, but they do have a point that it's a real problem. Not sure what the solution is. This protest doesn't seem to be it, but I applaud them for taking a MVP stab at it. Time to iterate now, protesters!