For DevOps to work, there has to be mutual respect. Respect is not something that can be dictated, it must be earned. Developers and operations teams working together, targeting the same values, creates respect between them. So for security to become a part of the pipeline, we too must earn their respect and show respect in return. Working with genuine intentions to make everyone's lives easier, dropping the politics of organizational silos, is the only way to be truly successful.
Feel free to share your thoughts and experience in the comments.