It was more the fact that they built a giant fence in the core, it was all very surreal. I was quite impressed by the police, until that debacle at Queen and Spadina. Even if it all went well (which I agree, it mostly did), there is still something wrong with spending a billion dollars to cordon off the downtown of a major city so our leaders can meet.
Also, happy independence day to you Americans. You're welcome back to the commonwealth anytime you want, you know, as long as you put the Queen on your money.