If that lady that posts hateful, awful stuff online has previously released public information about herself such as her place of employment that is fair game, but it still opens up the doxer to potential civil lawsuits and criminal charges including harrassment, intimidation, stalking and even assault. The intent of the Doxer may not matter.
https://www.mondaq.com/canada/privac...f-social-media
Doxxing also promotes online vigilantism which I believe should be discouraged as it is painfully easy to make up fake quotes or allegations about innocent people and have their lives destroyed in this highly charged atmosphere we're living in right now.
Its all fun and games until the Dox gun is pointed at you.