I work at the DMV so I have a little bit of insight. Most of the time people come in without all of their documents (which we clearly state what’s needed online) and then they get angry when we tell them what they don’t have and what they need. It’s a never ending cycle of anger and hatred. It’s hard to stay positive when people are always angry at you. Behind the scenes the the people that work there are genuinely really good people, they just have to deal with so much that they just assume everyone is going to be negative towards them.