Violence in Santiago

Dear Sir,
I'm writing to you about the violence in Santiago. Now in Santiago there are lots of criminals and it is so bad, because you can never be calm when you walk in the street, or when you go to the mall. This is terrible. Many children are scared about this topic.
Last weekend I went to the park with my friends, and in the park there were lots of children, they were playing football, some children were skating and others were reading a book. All these children were very calm and happy, but a group of criminals arrived in the park, and mugged a lady. She was the mother of one of the children who were playing. The criminals robbed the bag, the wallet and the jewels of this woman. The criminals escaped and the lady cried. The children on having seen the lady crying they started to cry. This was so painful. They were very happy and these criminals ruined the day of these children. The violence has to be end.
Yours faithfully,
María de los Ángeles Gago