Empathy has an evolutionary advantage.
Blame the LEAD of the 70's/80's or what have you, humanity is losing empathy globally. Gulags are something we should only read in books, but Unit 731 wasn't even that long ago! ☹
It completely repulses me. I try not to judge as we are all humans capable of the same things. But when will it all ever truly end? I hope it will someday, but doubtful in my lifetime.