meanwhile, authorities here are still struggling to identify all of the 50 dead from last friday s attacks which have not only traumatized the muslim minority here, 1% of the population, but ordinary new zealanders as well. i see them in tears every day as they lay flowers here in christchurch. they are us, as the prime minister said eloquently. thanks for being there. we have an important cnn investigation that found so called anti-vaxxers have been harassing, intimidating doctors and patients who speak out in favor of vaccinations. elizabeth cohen has more. when you say the science is settled, vaccines don t cause autism you are bearing false witness. reporter: extra security was on hand at the centers for disease control meeting because anti-vaxxers had come to give a piece of their minds. there is a reason the cdc was