A panel discussion about human trafficking will be held at the Dover Town Library on Wednesday from 7 to 8 p.m. The topic is difficult, but important, according to library director Cheryl Abdullah. “We have to become aware and involved” in the worldwide problem of human trafficking, which most often victimizes women and children, she said. The free session will feature two psychiatrists as well as representatives from the Wellesley Centers for Women at Wellesley College, and My Life My Choice, a national organization designed to reach adolescent girls most vulnerable to commercial sexual exploitation, according to its website. Abdullah said she organized the event to not only draw attention to the problem and make the community more aware of its extent, but also to provide information about ways to help. “We need to help give a voice to those who have none,” she said.