As per Zoe Zeynep, if there’s no group, then start your own. You may need to call a big organization like PETA, so you are able to utilize their pamphlets, etc., for leafleting and join in their action network. The other choice is to begin your group and not affiliate with only one organization. Some choose to put up a group-specific to one place or animal activist, for instance, an anti-vivisection or anti-fur group. This is good for those who feel strongly about these issues, but not so many others.