Hitchens and Dawkins and Sam Harris are among the most credible people out there. Every statement they have made is well-researched, grounded in irrefutable facts, and honest.
Anways here's one of my favorite quotes by Hitchens on Islam:
"Islam is a totalitarian, repressive sect and its followers are naught but cruel and cold calculating racists. From them you can only expect deceit, aggression, meanness, repression and suppression. Islam (in modern Europe and largely in the world) is not compatible with intelligence, will and freedom. They do not hear nor permit anything to be said. Only by putting them in their place, we will be able to deploy in society free and balanced a meaningful dialogue on the principles and basis. Just as the 1940's brought our great struggle against fascism, so too the 21st century is the struggle against the new Islamic fascism and creeping shariah."