Yes.... stuff happens . It is a fact of life and J Ws are as much at risk as anybody else.
in 2017 a bro. went to an empty K Hall down in Devon. He was there to do a job of work. While he was there alone a man turned up and accosted him, stabbing him fatally. There was nothing wrong about the victim, he was just unlucky... The killer was later committed to a secure mental institution.
So the man enjoyed no special protection from Jehovah.
Long before I lost faith in it, I had worked out that there was no protection in this life.
Back in the 80's somebody planted a bomb in an Australian K Hall. It went off during the meeting with some loss of life and serious injuries.someone sent us a tape recording of a talk in which a speaker attempted to explain God's protection, saying ,in effect , that it could have been far worse. That was no explanation for us and we recognized that they were just victims of a horrible crime.
Of course a dub might say that Jehovah protects his people in the long run by the provision of a resurrection hope !