If the violence is too rough and persistent, it requires an R or NC-17 rating.
If violence is extreme, it requires an NC-17 rating. If the violence is too rough and persistent, it requires an R rating.
If the violence is too rough and persistent, it requires an R rating. If violence is extreme, it requires an NC-17 rating.
If the violence is too rough and persistent, it requires an R rating. If violence is extreme, it requires an NC-17 rating.