fascicle, that is because they are the sabs some of us have met.
I have been threatened every year of my adult life just for living rurally. I have had people follow me home, stand in my garden and yell through bullhorns, set off those loud air horns, send dogs into my garden and complain when the stock fence gave them a shock, threaten me with legal suits, been pushed, had my car damaged, been sworn at, blocked in and out of my home/village.
I live through this only because I live rurally. Not because I hunt, have signs up saying I love hunting or anything else. I just happen to live in a rural village.
As I have said before hunt followers are also irritating and rude but nowhere near as scary.
Read back my posts here, you will see that I have met the professional sabs, the deranged loonies that believe that hurting humans is justified if you are trying to save an animal.
I can also attest to the fact that the pictures and films anti vivisectionists, specifically, use are so out of date and edited that they are a lie from beginning to end. I can do this because I recognise some of the photos they still use, from way back when I was about 18. The acts that they depict no longer occur in labs in the UK/Europe. But still they use them to stir up feelings - and raise money.
Oh, I recognise the pictures because I am related to the government vet who took them! In one film he is clearly visible, identified on the soundtrack as the monster cruelly torturing dogs. They claim they took the footage in about 2009. Actually the film is of him decommissioning a centre back in 1986. He died in 1996.