...I never thought I'd see the day when a police officer would ask a motorcyclist why he was wearing a leather jacket while riding on a hot day...
Just in reference to the jacket/vest question.
I often notice on the U.S. Police reality shows where the Police keep asking the suspect lot's of questions.. some questions the officer obviously already knows the answer to.. to me.. they are trying to get the suspect to trip up (leading to more direct questioning), or to admit to the offence (or at least parts of the offence) to save the officer some work or possibly make it harder for the offender to lie his way out of court.
When I saw the video of the guy at the service station the officer first asked what meaning the jacket had for him (listen to the video again!).. and he said that he didn't understand the question. She made the mistake of saying that it was a hot day to be wearing a leather vest (or jacket.. but it was a vest).. possibly in the hope that he would explain that the jacket does have meaning to him.. the problem arises when the guy in the video records vision of the Police (in detail, but with no vision of him or his body language/attitude) and it gets promoted over social media and the Police not in a position (or willing) to explain some of the tricks of their trade.
Now, I don't know about you, but I wouldn't wear a vest for protection (unless it was a high viz), leather or not.. I wear a jacket because it also protects the arms (including protection from the sun).. my summer jacket is surprisingly cool while it has even a breeze going through it. You don't NEED to wear a leather jacket for protection but you can choose it if that's what your heart desires.. but a vest?
You don't see his vest, but you can assume that it has patches on it. Again, if your heart desires.. the vest obviously has meaning to him other than for protection..
The guy rides a bike that says 'look at me', and the riding gear that says 'look at me'.. there is more to it.
Again, I could be wrong but that's the way I took it when I saw it.