"Oh, my, I need to ask the pronouns in question of everyone present, just in case! Mx mugger, what are your preferred pronouns? I can't intervene unless they're he/him! If you don't tell me, I can't intervene! Maybe you have an X, formerly Twitter, handle that has they/them in your bio?"
How do they know it was a man and the one being robbed was a girl? Sounds very phobic
"Oh, my, I need to ask the pronouns in question of everyone present, just in case! Mx mugger, what are your preferred pronouns? I can't intervene unless they're he/him! If you don't tell me, I can't intervene! Maybe you have an X, formerly Twitter, handle that has they/them in your bio?"