Why do you say it's a non threatening situation
How is waving and pointing a gun non threatening?
The scene was secure. There was no crime (menacing) in progress. Tamir was not pointing a gun when the police arrived. Should the police have been concerned about the report of menacing? Yes. Should they have investigated the scene for further information (questioned the "suspect")? Yes. Should they have operated with an abundance of caution? Yes. Should they have shot up the place like it was the wild wild Midwest? No