While some self-described hacktivists have engaged in DoS attacks, critics suggest that DoS attacks are an attack on free speech and that they have unintended consequences.
Following denial-of-service attacks by Anonymous on multiple sites, in reprisal for the apparent suppression of Wikileaks, John Perry Barlow, a founding member of the EFF, said "I support freedom of expression, no matter whose, so I oppose DDoS attacks regardless of their target.. they're the poison gas of cyberspace.." [REF].