This is a good article to read.
What to do if you see domestic abuse in public: "What? Who?
Between gasps, she explained that she and her boyfriend had just been in a fight, and it had ended with him storming off, taking her glasses with him. She had poor eyesight, and couldn't see well enough to find her way out of the park. To make matters worse, she wasn't from London, and her phone was dead.
She was stranded, far from home, and unable to see. No wonder she was so upset. What kind of jerk does that? I thought."
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