[Marxism] A cop is a cop is a cop

[Ruthless Critic of All that Exists]

On Tue, Apr 29, 2008 at 11:53 AM, Angelus Novus
<fuerdenkommunismus at yahoo.com> wrote:
>
>  But with regard to the present discussion, it is
>  rather clear that cops are not "workers", since they
>  are not carrying out private labor expenditure whose
>  relationship to society is mediated through exchange.
>  The activity of police is directly managed by the
>  state apparatus.

I'm a little confused by this: aren't they selling their labor-power
like any other worker? Arguably, there is an exchange taking place
(labor-power is being exchanged for wages).