I believe the question was "Should Roadside Memorials be allowed".
When it is NOT on private property and along our roadways YES! If people can't drive by them without being distracted and fearful of causing an accident, then seriously they shouldn't be on the road in the first place.
If it IS on private property, this depends on the home / property owner.
With this sad situation I believe both sides could have handled things very differently. Tragically a young man was killed at that spot and his family and friends acted without thought or consideration of the land owner, acting out through their love and grief of losing their loved one, as then the land owner reacted without thought or consideration to the family and friends of the young man who was killed. But it IS their property and they should have every right to approve or deny the placement of any items on their land. I feel bad for both families! I personally would allow a memorial on my property if I knew it would bring peace and comfort to the family of the deceased.
I and my family have a memorial where our loved one died, we pay taxes like everyone else, and have had nothing but positive responses. This forum was the first time I read anywhere that there are so many people out there who dislike seeing these memorials. I had the opportunity to read all the posts left on this forum before it was all deleted and wow did it get way out of hand!
My deepest condolences to the Labe family.