The stars are opposing the "Draft Policy on Sex Work" of Amnesty International, which posits that all consensual sexual conduct between adults, which excludes acts that involve coercion, deception, threats, or violence, is entitled to protection from state interference, said The Hollywood Reporter.
The report, scheduled to be presented next month at an Amnesty meeting in Dublin, argues that the ongoing criminalisation of the sex trade leads only to more "harassment and violence, including ill-treatment (of sex workers) at the hands of police."
"The signatories below represent a wide breadth of national and international human rights advocates, women's rights organisations, faith-based and secular organisations and concerned individuals," the letter reads.
"(We are) deeply troubled by Amnesty's proposal to adopt a policy that calls for the decriminalisation of pimps, brothel owners and buyers of sex, the pillars of a USD 99 billion global sex industry."
According to the letter, any sanctioning by the state could lead to "a system of gender apartheid ... (in which women) whose lives are shaped by absence of choice are ... Set apart for consumption by men and for the profit of their pimps, traffickers and brothel owners."