Considering that impeachment of Bush or Cheney isn't gonna happen, although there would have been some legal reasons, this is a great symbolic gesture. Kudos to Marlboro and Brattleboro!
By the way Bush is by no means the only recent democratically elected "leader" who's had criminal trials hanging over him. Tony Blair, Silvio Berlusconi and Jacques Chirac have all been subject to police interest on charges of deliberate, grave criminal fraud while they were sitting as pm or president, though none of them were arrested.