More than 100 artists are set to participate in the eighth annual Graffiti Jam, which also features performances by local bands DJs and hip hop artists. The event is scheduled for 10 a.m. to 6 p.m. at TerraCycle headquarters, 121 New York Ave., Trenton. Trenton’s Vicious Styles Crew and other urban artists will attempt to completely repaint Terracycle’s walls with new artwork.