When you are in an echo chamber created by social media, the dehumanization required to make you a killer is mich more subtle, more easy and more covert. All t

When you are in an echo chamber created by social media, the dehumanization required to make you a killer is mich more subtle, more easy and more covert. All the methods you have mentioned, are, to some extent in the public eye. Imagine the uproar if anti-semitic articles occured in any of the daily news papers. It is a matter of public record, even if some of the methods come out later. Now imagine how many such articles are published and propagandized in online media, away from the gaze of critics, away from serious action by concerned authorities. The power is in the hands of big data companies and they are driven by greed and stock market performance. Once the papers die, people will start dying too.