With their wallets.
In all honesty: clients should support sex workers’ rights organizations with cash.
Sex workers are hip (and maybe more than anyone) to men who want to take up a lot of their time and space – so any client ally should be prepared to demonstrate through consistency that they are there not to get free time but to offer something useful themselves. That could be as simple as buying a case of bottled water for a demo – and then going home.
From my own experience, I’ve only met a handful of clients who wanted to “support the movement,” and of those, only one offered any “support” (not even just talking cash here) that extended beyond wanting to engage sex workers for long, unspecific, mansplainy conversations, supposedly to give advice and strategy. (I will not forget the one who decided what we needed to do in order to remove laws against prostitution was hire a big-time lobbyist and send them to DC – when prostitution laws in the United States are almost all confined to the state level.)
I’d ask the same questions I would as an ally to any other movement: am I here to support, or direct? Am I doing what’s asked of me, or making demands of the people I’m here to support? (Phrase to check if you find it coming out of your mouth at a meeting: “someone should….” – more useful is, “If you need me to, I can….” and be sure that you really can.) Above all, am I here out of solidarity, or for a gold star for showing up? (If that’s the case, send a check and frame the thank-you note, and sincerely know that cash really means a lot, too.)
(rebloggable by request)