Can't believe I had to put this on my website but here we are:
I will not accept an invitation to speak to a physics or astronomy department or organization about something other than my physics research unless I have also received an invitation to discuss my physics research.

Why? Because I have worked hard to become a scientist and to become an active, leading participant in my field of particle cosmology.

To treat a Black queer femme as if my primary value is to explain racism and sexism and deny me the opportunity to fully participate in science is a choice that reproduces the disparities that you supposedly care about.

More details here: http://www.cprescodweinstein.com/speaking 

I have tried different versions of statements like this on my website over the years but I continue to get invitations that I consider to be inappropriate, via my website form, so I am trying some new, very direct language.