Jasenovac concentration camp
Inmates reacted to being in Jasenovac in two basic ways.  Some became activists.  They formed resistance movements (groups who tried to fight the Ustaše in different ways, like stealing food, planning escapes and revolts, and trying to get in touch with people outside the camp).  But most of the inmates reacted by just trying to survive, and get through the day unharmed.  This was not "going in line to slaughter," but rather another strategy to try to survive.