Story about Tiananmen Square

[mycatis]

When I was young I read book about the events at Tiananmen Square. It was novel written as if the author was a young boy who had been there at the time, I think he was American and had to get help to get out of the city. It was a very good book and I would like to find a copy for my son as it tells the basic story of what happened very well and in a way a child can understand. I know it's not much to go on but I hope someone can help, thanks