That's totally true. As have a great many non-Communist countries. Communism is an enemy, but it's not the only enemy. We should oppose totalitarianism of all stripes, whether it's militarist, Islamist, fascist, Communist or anything else. Allende and Pinochet were both bad.
I have to disagree with you here. Trying to lump Pinochet with other non-communist dictators such as Saddam Hussein or Hilter is dead wrong. Pinochet was neither AND he voluntarily stepped down from power after it was all said and done.
I wasn't there and neither were you. You are conveniently forgetting that Allende was democratically elected to power. Just putting your head in the sand and passively denying an impending disaster is absolutely the worst thing you can do... government takeover of all personal property, zero respect for individual rights and mass executions to maintain power.
In so many words, you can oppose totalitarianism all you want but you will be among the first to be executed when a hypothetical country that you reside in turns communist.
Why? Because you disagreed with them...