“There are the hands that made us, and then there are the hands that guide their hands.”
Calvinists would take this quote as saying, God decrees that people carry out evil – not just allowed or used it.
NonCalvinists would take this quote as saying, God knows the evil that people will freely choose to carry out – but works out a way to turn it to good.
The difference in how James White and William Lane Craig approach Genesis 50:20 during their discussion on Unbelievable should suffice as example: