They have them in the U.S too except one day they're Muslims & another day they're christian nuns & another day they're whatever else, I tried speaking to one of them once & she wasn't Muslim, she only wore a headscarf. I asked her whether she were American she uttered some unintelligible words, what her home embassy was then, again nothing comprehensible, I asked her if she spoke Arabic she nodded, then I proceeded to speak to her in Arabic and she was stumped then walked away to beg someone else .. they only call you 'brother' (not necessarily because they're Muslims) but to make an appeal to a supposed commonality that binds you with them. If I felt she were really needy I'd have given her money, but they're bandits in their own rights.. try to engage in a prolonged conversation & you'll get to the bottom of it!
& Allah swt knows best