Before I start I am 15, obviously white and I live in an extremely multicultural area in London.

I was in my town at the bus stop when an elderly (like 70 year old, I'm not sure what religion or culture) woman came up to me and starts screaming in my face "You white fucking bitch, who the fuck do you think you are looking at me with your racist face..." anyway she starts getting extremely vicious with me and making threats towards me and my family. I was lucky that a policeman walked past as she slapped me. But I need some advice and comfort as I now feel really unsafe when in public. I don't understand why I was targeted as I have done absolutely nothing wrong and am one of the most accepting person. I accept anyone of any race, culture, religion, gender, sexuality, disability and etc. I understand this woman may have had negative experiences with Caucasian people but that gave her no excuse. I also see her regularly and am afraid she will do something Please give me some advice