Things like that last line are what make me incapable of taking conservatives seriously in a democratic age. Why not base your contempt for the homeless on your own intrinsic feelings, rather than justify it by appeal to the 'public health'?
You do realize that the war on helping the homeless is not a conservative/lib thing right? Here in the US much of the anti homeless laws in the Majors cities are given to us by people on the left.
Those people may be liberal, but if they are passing laws penalizing the homeless then they are, at least in that respect, by definition not on the left.