Im not entirely sure if the term is correct in English, but people with a "Holier than thou"-attitude.
Harmless examples include Vegetarians and Vegans who absolutely NEED to tell you how much of a better person they are for not eating meat. Getting worse with people who ride around on the fact how much healthier their lifestyle is, or how much better their carrier is going, or how superior their hobby is. Worst of all are those people who actively try to make you feel like a bad person for not participating and caring about all the shit they do. Props to you for donating to certain organisations, or donating blood. It's cool of you to try for care for every person you know, and its even better that you try to help friends and family with their problems. I respect ttat. There is NO NEED, to freaking ride that shit on a flaming horse that plays piano, everytime we talk to each other. There is a point where it looks like you just want to polish your Halo and I honestly dont care about that.
Second would be people that take everything personally, cant differentiate between humor/sarcasm and a serious conversation, or people who are easily upset. I dont wanna use "sensible" since that could be a lot of other things too.
Anyway, I hate it when I just say neutral things, and people instantly interpret stuff into it. I cant really emphasise how much it pisses me off, when I write something harmless like:
Friend: "Wanna play X / Go see Y?"
Me: "Nah, not in the mood."
Friend: "Yeah yeah, you just dont see us. I get it."
And that's one of the harmless examples. I had massive arguments with people, simply for stating that I dont like a certain Band or Genre, or claryfing errors. I just cant stand when people immeadeatly go for the whiny "Im such a poor sod."-approach whenever they're confronted with the slightest negative response.