Police, conservative special interests, gutless or fear-mongering politicians can get a lot of stuff passed which, if put before the voters in Initiative form--would never pass muster.

These measures were taken as backroom decisions.

Finally, even if your argument were true, that the majority believes in discriminating against poor people and removing their right to use public spaces for cosmetic appearance purposes or becomes of a paranoid "discomfort" with their being there, I would denounce such discrimination--just as it should be denounced against other minorities.