I believe that a correct response to irresponsible behaviour on a lesser scale, such as riding a yearly, is an informative yet not unfriendly letter. In these instances the person may not know. When I was young everyone had barbwire fences so I didn't learn than this was inappropriate fencing for a horse until a later. We all live and learn. But what about the abuser who doesn't call AC and let's their horses starve to death. How do you responded?
Here's an example: Someone starves or uses abusive training practices on horse. This person is tried and convicted so there no question about culpability. The person is not mentally ill and they are being callous to win prize money. Is it ok in this circumstance for the Fugly followers to send frank or abusive letters to the criminal? Where do you draw the line?