Allende was elected, he was deposed due to the difficult conditions the people were having to live in. Some of those difficulties were as a result of the USA imposing sanctions. The conditions were difficult there were shortages of some of the basic things, people marched out into the streets and defied the police and military to take over, these people marching were mothers and wives beating on their empty cooking pots. The people that held a socialist president up as a Messiah were not pleased. Why the right wing military disappeared people I don't fully understand other than it was akin to a civil war. Were the curfews and restrictions of movement necessary? Some would agree that it is one way to stabilise a country when there are people within that would overturn the regime that is in power. Others would see this simply as suppressing the people into accepting the new order.
Whichever way you think things happen particularly when people are prepared to use violence to achieve their goals.
Chile has usually being one of the most cosmopolitan South American countries with the rule of law and democracy as strong corner stones of society, before Pinochet and hopefully after. Even without oil like some other countries in South America the economy has been ok, probably due to the lawful society and stability of governments unlike some of it's neighbours where government can change two or three times within one year.
Chucaro, not sure that the socialist ideals are ever going to be more than an ideal. I would hate to have had to live in Eastern Europe after the WWII and Russia does not look that attractive at the moment.

