I saw that in Wallasey when that girl was tragically mowed down by the immigrant with no insurance, etc. It was respectful, but if it was outside your house would you want it? I was driving through Warrington and a car had crashed into the gate post of a large private house, the poor people who lived their had to put up with a carpet of flowers on their drive for weeks.
You should see what one family did in Tyldesley when their daughter was run over. It started with pink ribbons in a tree, which was fairly tasteful but ended up with a mini gravestone at the side of the pavement. I kid you not.