Speaking at a prayer service for the 17-year-old mentally ill girl who was gang-raped by seven young men, Mokonyane said locally produced TV programmes should show images that do not corrupt the minds of the youth.
"Children must not watch people having sex in Generations (TV soapie) and think it is cool. We want to watch shows that will empower families," she said.
The service was held at Soweto's Doornkop sports ground at the weekend.
After the rape the boys circulated a video clip brazenly revealing their actions.
The video of the incident has been circulating and has been a major topic on social networks.
Mokonyane appealed to those who were in possession of a copy of the video to get rid of it.
"Please delete it from your phones if you have it," she pleaded.
"Young men, engaging in sexual intercourse with someone who does not want to, is not good. It's even worse if that person is vulnerable," Mokonyane said.
Condemning the parents of the suspects would not heal the hearts of the girl's family members, she said.
"No one is guilty so let us not condemn their families. Those boys' parents did not send them to do what they did."
She said attacks on women and children would be met with strong resistance.
"Not even animals do what happened to that young woman.
"We must all come together and fight this problem the same way we fought apartheid," she said.
Matshidiso Mfikoe, MMC for public safety in Johannesburg, said there would soon be more police officers on the streets to combat crime.
"From July we'll deploy more Metro Police in our wards to monitor and deal with those committing crime. It is sad that the boys who were supposed to have protected her, ended up violating her," Mfikoe said.
Veteran actor Patrick Shai called on male adults to be living, fatherly examples for teenage boys.
"As a father, I should be concerned with the company my son is keeping. I should be interested in his views of women. We must go back to reclaiming our children."
- The suspects appeared in the Roodepoort Magistrates' Court last Thursday. The case was postponed to Wednesday.