Sex sells - but a new law under debate in France could mean penalties for those buying it.
Parliament is considering introducing fines of 1,500 euros for visiting a prostitute, 3,000 for a repeat offence.
These demonstrators say it will punish their profession.
But it's claimed the law will improve protection, as well as ease access to residence permits, housing and financial support.
Guy Geoffroy, a member of parliament who is helping sponsor the bill, argues that restricting the client - not the sex worker - gets to the heart of the problem.
(SOUNDBITE) (French) MEMBER OF PARLIAMENT AND PRESIDENT OF THE SPECIAL COMMISSION OF INQUIRY INTO PROSTITUTION, GUY GEOFFROY, SAYING:
"There is one aim, only one, and that is to drive back prostitution because it's about one person being dominant over another through the use of money. For many years it has also been a symptom of the scandal of the trafficking of human beings."
These sex workers and their
