I agree with you about the tributes, and I'm glad they have been taken down.
I'm torn on the wider issue though. On the one hand, I do think people have the right to defend themselves in their home.
On the other, I know someone who has done this and been cleared, and he is not the victim or the nice person he paints himself as. I've had personal experience of his temper and aggression for different reasons, and am still living with the results.
I'm not saying that's the case here, but most of us only know whats been reported in the news, we don't know the families personally and based on my experience with the other man, I feel torn and reluctant to commit one way or the other, even though based on what I've heard I feel for this homeowner.
But I do feel that regardless, the flowers should not be allowed to remain if they are replaced.