You just can't win. Hopefully this is only an initial reaction and will eventually die down.
Personally, I don't know how I feel about normalizing censorship. Freedom of information is a large part of how we reached the peak of our current civilization. How long before this goes too far?
However, any organization that proliferates plagues should be labeled as a terrorist organization. The anti-vax community is like a terrorist organization with "good" intentions, and they're just regular misinformed people all around us. Very tricky situation indeed..