Unfortunately it is not quite that simple, when the police are called, especially in weapons related calls, they are obligated to respond, and to investigate. An honest man/person has nothing to fear from police presence, or their invesitgation, as this video proves.
And yes, officers, all over this country have countless man hours spend investigating what often, more often than not, legal activity.. Little old ladies and concerned citizens call all the time about strange vehicles parked in a drive, that turn out to be relatives visiting, or a new yard man.
This young man could just as easily could have been up to no good. And know one would know unless the stop was made and the questions were asked. . It went well, the officer did his job. just as thousands of officers, in every city in this country do each and every day...
Open carry has it's benefits, and it's draw backs. While civilians and those who MAY have thought of making you into a victim will look elsewhere. A drawback may be that the police, well, it just may "Arouse their Professional Curiosity". In making the choice to engage on open carry, you also may invite the opportunity to meet and greet some police officers you never met before...
As far as the young man that was stopped, well, he is fortunate.. Attitude is everything, especially in dealing with Law Enforcement.. Lucky for him he wasn't in Canton...