On April 17th 2018 DEEP Germany held a gender-based-violence prevention workshop for the 10th-graders of German School Cali, Colombia. In this project 60 students aged 15 to 16 learned about gender-based violence (GBV) and its resistances, both in history and in present times. The aim was to raise awareness on both, the grossest expressions of GBV such as feminicide and sex trafficking as well as the more hidden cultural aspects of patriarchy and the ways in which it affects society. Participants gained insight into a wide spectrum of gender issues and got to eliminate possible misunderstandings regarding relevant concepts while they developed their own perspective through an interactive methodology.