Shutting down the "Men's Parties"

The recent closure of the "Men's Parties" sex club in D.C. has led to predictable calls from the P.C. crowd to shut down such businesses as a response to HIV. (Explain to me again how the P.C. folks are different from the religious right.) Yet such heavy-handed nanny-statism has demonstrated its ineffectiveness in such situations time after time. Why will it suddenly work this time?