Im so f*cking mad

Im in my First playthrough (so no spoilers please) and kieran just died... I was so shocked the way he came to camp, because i was just expecting a mission with Sadie. I reacted the same to seans death, which i liked personally a Bit more but his death was better i guess. I literally just want to Ride to the ODriscolls (and Grays) and kill everyone. I found it especially sad, how no one really seemed to care for seans death and also kierans a bit. How did you guys react?