national association of county and city health officials, and she says that public health officers tend to face harassment with any new covid-19 mitigation measure that's introduced to the public. and in this case, that new measure is vaccines for kids. have a listen. >> the rollout of the pediatric vaccine is another critical turning point, and we anticipate that there will be people who may, again, target public health officials in the messaging related to the rollout of this latest mitigation measure. we are so concerned that as time goes on, as this pandemic goes on, that these threats, intimidation, harassment and really are vaadvancing in some cases and becoming more dangerous. >> reporter: now, as far as the threats becoming more dangerous, the southern poverty law center says some of this harassment might be coming from members of extremist groups. the center tells cnn, quote, in