They're people who would like houses to cost less than $2 million.

(The above comment appears to be from a "left-NIMBY", which is a kind of person that only exists in SF and spends all their time blocking new housing because it isn't "affordable" - of course, never making new housing also won't make it "affordable". They do have a tendency to believe poor/minorities are intrinsically poor and will only ever be able to live somewhere if they're constantly "organized" by "tenant organizers" who are typically over-theorized communist grad students or well connected slumlords like Michael Weinstein and John Elberling.)