Smart spoke out against pornography in a new video from activist group Fight the New Drug, which raises awareness of the harmful effects of porn by presenting it "as a public health issue, rather than as a moral, political or religious argument."
"I have gone on to become an advocate for abuse prevention, an advocate against pornography. I witnessed firsthand just how damaging it is," Smart said.
Smart testified against Mitchell in 2010. He was sentenced to life in prison in 2011.