A sociopath is a term used to describe someone who lacks empathy and has a disregard for the feelings and rights of others. They often manipulate and exploit people for their own benefit without feeling guilty. Full definition
Because their goal is to fool us like a bunch of sociopaths who want to change the world based on what they know is a lie. (judithcurry.com)
Stupid, mean, privileged, deeply unaware, lacking in empathy... enough already with sociopaths in government! (religion.blogs.cnn.com)
The most gratuitous practitioners of violence right now would be the Zetas, a rampaging league of sociopaths with a notable devotion to physical cruelty. (nytimes.com)