Social movement theorists have assumed that the availability of resources enhances the likelihood of collective action. They see human resources, social-organizational resources and material resources as being significant to the rise of social movements. In this regard, Fahmi Amhar’s claim that HTI was less interested in a large membership may seem surprising to many SMT theorists. Nevertheless, a closer examination of the movement will reveal that HTI has clearly implemented successful resource mobilization strategies, especially in securing manpower and material resources, for the movement. This chapter argues that HTI has effectively built a strong organizational structure by recruiting members and procuring funds, leading to its growth in Indonesia. However, it has been less successful in building social capital. The development of the argument will closely adhere to the resource mobilization strand of SMT as its terms of reference.