Grass Roots – Trevor GTA V: Trevor can meet Barry at a makeshift table he’s set up in Legion Square. When Barry attempts to appeal to him about legalization of marijuana, Trevor bristles.
Trevor’s vision and hearing begin to blur and the world around him appears to be in a purplish haze. He notices a group of clowns nearby and an Assault Shotgun appears in his hands.
Eventually clown vans show up that must be destroyed or they will continually generate clowns.
https://www.youtube.com/watch?v=0oNrJO53HJs – All Missions