We all spent the past week giving thanks and expressing our gratitude for life's many joys. Unfortunately for us and for the rest of the world, life still comes with Karens. So now that we are done saying what we're thankful for this week, let's take a look at some of the people who we aren't thankful for but we have to deal with every so often. This week's roundup of Karen stories includes an Internet rant, a parking debacle, a customer service experience gone wrong, a workplace sabotage saga,…