One example of Riker's misuse of his newly given powers was with Worf's "gift."
What happen there? Was the Klingon women a pre-existing person who Riker brought to the Enterprise to give to Worf as a possession? Okay that's slavery.
Or did Riker's new powers enable him to create an entirely original sapient being, a real Klingon female, who after Worf rejected her, Riker summarily killed? She ceased to exist at Riker whim.
Once she was brought into existence, she was a individual. Riker's actions would have been murder.
There is a third possibility, that there was no person inside of the body. "She" was nothing more than something off the holodeck.