Advocacy is informing and persuading on a topic. Assemble the facts from reliable sources. Gather statistics. Look at both sides of the issue.
Click for slides from United Way's Lindsay Torrico. (2014). Influencing Public Policy: Advocating for a cause. United Way. http://www.slideshare.net/StudentUnitedWay/suwlr-2014-advocating-for-a-cause-lindsay-torrico