Protest cycles are another important aspect of social movement success according to PPT. A protest cycle is a prolonged period of time when opposition to the political system and acts of protest are in a heightened state. Within this theoretical perspective, protests are important expressions of the views and demands of the mobilizing structures connected to the movement, and are vehicles to express the ideological frames connected to the framing process. As such, protests serve to strengthen solidarity within the movement, to raise awareness among the general public about the issues targeted by the movement, and also serve to help recruit new members.