What is FREE trade?

After talking about the Tiananmen Square massacre in China, I thought about another protest led by many students and intellectuals in Seattle, Washington. Protestors were not brutally killed, as in Tiananmen, but the protestors were treated quite inhumanly and met with much resistance by police and other government officials. The World Trade Organization (WTO) met in Seattle in 1999 to discuss rules about trading. Thousands of people met in the street to protest what this 'free' trade really meant and how it affected the world and developing countries. The protests were non-violent until a small group started violent acts which later brought on "issuing of curfews, arresting, tear-gassing, pepper spraying and even shooting rubber bullets at innocent protestors." I have attached a video, part of a series, which documents what happened. I was outraged at the injustice that occured.

http://www.youtube.com/watch?v=7JUZOGkw6tQ