As +Centaurus has suggested, if you really wished to put a positive spin on rape, you would write,
Fortunately, a crime like rape is manifested within its social context through people's attitudes and behaviors.
But in writing that, be prepared to be thrown heaps of rotten eggs and tomatoes, because there is no fortunateness in being raped, or the manifestation about the tendencies of being raped.
One of the most used phrases for contrasting with a positive or neutral supplementing action is on the other hand, often shortened informally to OTOH.
On the other hand, a crime like rape is manifested within its social context through people's attitudes and behaviors.
Other suggestions,
- Distinctively, a crime like rape is manifested within its social context through people's attitudes and behaviors.
- Obviously, a crime like rape is manifested within its social context through people's attitudes and behaviors.
- Normally/usually, a crime like rape is manifested within its social context through people's attitudes and behaviors.
- Perceptively, a crime like rape is manifested within its social context through people's attitudes and behaviors.
- Evidently, a crime like rape is manifested within its social context through people's attitudes and behaviors.
- Evidently, a crime like rape is manifested distinctively within its social context through people's attitudes and behaviors.
- Without doubt, a crime like rape is manifested distinctively within its social context through people's attitudes and behaviors.
- Undoubtedly, a crime like rape is manifested distinctively within its social context through people's attitudes and behaviors.