Start by not talking to cops, even if they’re just potential cops.
I mean, I’m aware that’s considered good advice in general. FWIW though I’m assuming this is with 20+ protesters standing in easy earshot, not a private 1:1 conversation. Maybe there are better questions, or someone else should ask? Or is it better to ignore the potential cop? I feel like other protesters would want to be aware who is hiding among them.
Also, some words