What do you think about anti vaccine supporters?

I recently came across a website which is against vaccines... after reading their posters, quotes etc I can't help myself from thinking how unimaginably stupid/ignorant people can be.., and also they are giving it publicity to make sure that they can mislead the ones who don't have any idea about vaccines. We all know that vaccines provide active acquired immunity to diseases and it's the most effective method to prevent infectious diseases. And the world famous smallpox has been eradicated due to vaccination, and other diseases like polio, measles, mumps etc And also the DPT vaccine which is the combination against 3 infectious diseases ( diphtheria, pertussis and tetanus respectively ) So what do you think about the ones who are stupid enough to speak against vaccines or being vaccinated?
What do you think about anti vaccine supporters?
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