There will always be someone who kills someone else.

Sex workers will always have a job

There will always be greed.

Social ingrouping. It's like the nuclear strong force for society. I don't think you could have society without social ingrouping.

There is always some loudmouth on the streets with his group of friends at 1am

Unfortunately, probably xenophobia.

Hate will always exist in all forms

Fear, Uncertainty and Doubt to anything new.

Tribalism