Why is there now such an affinity between antivaxxers and neofascism?

Nor was this the first time that the Proud Boys and other [neo]fascists have appeared at antivaccine rallies. For example, in July Proud Boys showed up at an antivaccine rally in Los Angeles at which antivaxxers showed up at a breast cancer clinic and harassed patients, as well as the doctors, nurses, and other staff who were caring for them.

…wow.