At different line-ups, all of them were straight edge and, as of mid-2005, most had only vegetarian catering while touring. Bassist Liam Wilson, who was a vegan, appeared in several pro-vegan advertisements for PETA since the mid-2000s and the whole band did it in 2008 against dog fighting. While touring, the band placed a voter registration booth for the 2004 United States presidential election. The Dillinger Escape Plan did several charity concerts and sold merchandise with a portion of their profit's toward philanthropic organizations, including Music for Relief, the Juvenile Diabetes Research Foundation, The Trevor Project, among others. On one occasion, The Dillinger Escape Plan rejected a tour slot with thrash metal group Slayer in spite of being fans of them, because their lyrics and imagery regarding Nazism were "questionable" and "never ... sufficiently explained" to Weinman, who had relatives that were murdered in the Holocaust.